Model I used: 
<NOVA FURRY XL - IL V15.5> 


          
Prompts: masterpiece, best quality, amazing quality, very aesthetic, high resolution, ultra-detailed, newest, scenery, male, bedroom, night time, dark, dark lightning furry, full body view, (male, young), furry, anthro, little anthro pomsky, (male:1.6), (Grey and white fur:1.6), (short black hair:1.6), (fluffy thick hair:1.3), (dark gray ears:1.1), (detailed canine teeth:1.3), dark grey paws, detailed fangs, black claws, detailed thin black eyebrows, Heterochromia, blue and green eyes, (crying:1.8), head on pillow, solo, pink hair, fingerless gloves, toned, toned cub, hands clenched in sheets, side view, looking to the side, checkered onesie

BREAK, volumetric illumination, (cinematic illumination:1.6), detailed fluffy fur, photorealistic, masterpiece, best quality, amazing quality, very aesthetic, 4k, high resolution, ultra-detailed, absurdres, newest, scenery, intricately detailed, masterpiece, best quality, amazing quality, very aesthetic, newest, <lora:StS_Age_Slider_Illustrious_v1:-2.7>
Negative prompt: worst quality, lowres, low quality, bad quality, bad male anatomy, (female, girl:1.9), bad female anatomy, bad explicit, poorly drawn face, bad face, bad facial expression, ugly, bad hands, morbid, deformed, disfigured, mutilated, malformed, missing body part, malformed hands, bad feet, fused legs, broken legs, bad body proportions, gross proportions, disappearing hands, fused hands, fused body part, fused legs, (fused digits, missing digit, extra digit), bad artist, bad background, cropped, watermark, username, signature, not in perspective, error, jpeg artifacts, squares, blurry image, not in perspective, plain pose, plain figure, old, oldest,, (human ears, human), claws, long hair, girl hair, pony hair, visible penis, blush on snout, green hair, muscular, bodybuilder, muscles, (old:1.9), (adult:1.9), (teen:1.9), tattoo
Steps: 35, Sampler: Euler a, Schedule type: Automatic, CFG scale: 5.5, Seed: 2972331071, Size: 800x1200, Model hash: c4da45e49d, Model: novaFurryXL_ilV155, Lora hashes: "StS_Age_Slider_Illustrious_v1: bb11fa34470b", Version: f2.0.1v1.10.1-previous-669-gdfdcbab6

+[UPSCALING]

Detail Inpaint - eyes

masterpiece, best quality, amazing quality, very aesthetic, high resolution, ultra-detailed, newest, scenery, male, bedroom, night time, dark, dark lightning furry, full body view, (male, young), furry, anthro, little anthro pomsky, (male:1.6), (Grey and white fur:1.6), (short black hair:1.6), (fluffy thick hair:1.3), (dark gray ears:1.1), (detailed canine teeth:1.3), dark grey paws, detailed fangs, black claws, detailed thin black eyebrows, Heterochromia, blue and green eyes, (crying:1.8), head on pillow, solo, pink hair, fingerless gloves, toned, toned cub, hands clenched in sheets, side view, looking to the side, checkered onesie

BREAK, volumetric illumination, (cinematic illumination:1.6), detailed fluffy fur, photorealistic, masterpiece, best quality, amazing quality, very aesthetic, 4k, high resolution, ultra-detailed, absurdres, newest, scenery, intricately detailed, masterpiece, best quality, amazing quality, very aesthetic, newest, <lora:StS_Age_Slider_Illustrious_v1:-2.7>
Negative prompt: worst quality, lowres, low quality, bad quality, bad male anatomy, (female, girl:1.9), bad female anatomy, bad explicit, poorly drawn face, bad face, bad facial expression, ugly, bad hands, morbid, deformed, disfigured, mutilated, malformed, missing body part, malformed hands, bad feet, fused legs, broken legs, bad body proportions, gross proportions, disappearing hands, fused hands, fused body part, fused legs, (fused digits, missing digit, extra digit), bad artist, bad background, cropped, watermark, username, signature, not in perspective, error, jpeg artifacts, squares, blurry image, not in perspective, plain pose, plain figure, old, oldest,, (human ears, human), claws, long hair, girl hair, pony hair, visible penis, blush on snout, green hair, muscular, bodybuilder, muscles, (old:1.9), (adult:1.9), (teen:1.9), tattoo
Steps: 49, Sampler: Euler a, Schedule type: Automatic, CFG scale: 5.5, Seed: 2719971520, Size: 1600x2400, Model hash: c4da45e49d, Model: novaFurryXL_ilV155, Denoising strength: 0.3, Mask blur: 4, Inpaint area: Only masked, Masked area padding: 120, Lora hashes: "StS_Age_Slider_Illustrious_v1: bb11fa34470b", Version: f2.0.1v1.10.1-previous-669-gdfdcbab6

Detail Inpaint - teeth

masterpiece, best quality, amazing quality, very aesthetic, high resolution, ultra-detailed, newest, scenery, male, bedroom, night time, dark, dark lightning furry, full body view, (male, young), furry, anthro, little anthro pomsky, (male:1.6), (Grey and white fur:1.6), (short black hair:1.6), (fluffy thick hair:1.3), (dark gray ears:1.1), (detailed canine teeth:1.3), dark grey paws, detailed fangs, black claws, detailed thin black eyebrows, Heterochromia, blue and green eyes, (crying:1.8), head on pillow, solo, pink hair, fingerless gloves, toned, toned cub, hands clenched in sheets, side view, looking to the side, checkered onesie

BREAK, volumetric illumination, (cinematic illumination:1.6), detailed fluffy fur, photorealistic, masterpiece, best quality, amazing quality, very aesthetic, 4k, high resolution, ultra-detailed, absurdres, newest, scenery, intricately detailed, masterpiece, best quality, amazing quality, very aesthetic, newest, <lora:StS_Age_Slider_Illustrious_v1:-2.7>
Negative prompt: worst quality, lowres, low quality, bad quality, bad male anatomy, (female, girl:1.9), bad female anatomy, bad explicit, poorly drawn face, bad face, bad facial expression, ugly, bad hands, morbid, deformed, disfigured, mutilated, malformed, missing body part, malformed hands, bad feet, fused legs, broken legs, bad body proportions, gross proportions, disappearing hands, fused hands, fused body part, fused legs, (fused digits, missing digit, extra digit), bad artist, bad background, cropped, watermark, username, signature, not in perspective, error, jpeg artifacts, squares, blurry image, not in perspective, plain pose, plain figure, old, oldest,, (human ears, human), claws, long hair, girl hair, pony hair, visible penis, blush on snout, green hair, muscular, bodybuilder, muscles, (old:1.9), (adult:1.9), (teen:1.9), tattoo
Steps: 49, Sampler: Euler a, Schedule type: Automatic, CFG scale: 5.5, Seed: 2719971520, Size: 1600x2400, Model hash: c4da45e49d, Model: novaFurryXL_ilV155, Denoising strength: 0.3, Mask blur: 4, Inpaint area: Only masked, Masked area padding: 120, Lora hashes: "StS_Age_Slider_Illustrious_v1: bb11fa34470b", Version: f2.0.1v1.10.1-previous-669-gdfdcbab6

img2img: 
parameters

masterpiece, best quality, amazing quality, very aesthetic, high resolution, ultra-detailed, newest, scenery, male, bedroom, night time, dark, dark lightning furry, full body view, (male, young), furry, anthro, little anthro pomsky, (male:1.6), (Grey and white fur:1.6), (short black hair:1.6), (fluffy thick hair:1.3), (dark gray ears:1.1), (detailed canine teeth:1.3), dark grey paws, detailed fangs, black claws, detailed thin black eyebrows, Heterochromia, blue and green eyes, (crying:1.8), head on pillow, solo, pink hair, fingerless gloves, toned, toned cub, hands clenched in sheets, side view, looking to the side, checkered onesie

BREAK, volumetric illumination, (cinematic illumination:1.6), detailed fluffy fur, photorealistic, masterpiece, best quality, amazing quality, very aesthetic, 4k, high resolution, ultra-detailed, absurdres, newest, scenery, intricately detailed, masterpiece, best quality, amazing quality, very aesthetic, newest, <lora:StS_Age_Slider_Illustrious_v1:-2.7>
Negative prompt: worst quality, lowres, low quality, bad quality, bad male anatomy, (female, girl:1.9), bad female anatomy, bad explicit, poorly drawn face, bad face, bad facial expression, ugly, bad hands, morbid, deformed, disfigured, mutilated, malformed, missing body part, malformed hands, bad feet, fused legs, broken legs, bad body proportions, gross proportions, disappearing hands, fused hands, fused body part, fused legs, (fused digits, missing digit, extra digit), bad artist, bad background, cropped, watermark, username, signature, not in perspective, error, jpeg artifacts, squares, blurry image, not in perspective, plain pose, plain figure, old, oldest,, (human ears, human), claws, long hair, girl hair, pony hair, visible penis, blush on snout, green hair, muscular, bodybuilder, muscles, (old:1.9), (adult:1.9), (teen:1.9), tattoo
Steps: 35, Sampler: Euler a, Schedule type: Automatic, CFG scale: 5.5, Seed: 3704640657, Size: 1600x2400, Model hash: c4da45e49d, Model: novaFurryXL_ilV155, Denoising strength: 0.35, Lora hashes: "StS_Age_Slider_Illustrious_v1: bb11fa34470b", Version: f2.0.1v1.10.1-previous-669-gdfdcbab6

masterpiece, best quality, amazing quality, very aesthetic, high resolution, ultra-detailed, newest, scenery, male, bedroom, night time, dark, dark lightning furry, full body view, (male, young), furry, anthro, little anthro pomsky, (male:1.6), (Grey and white fur:1.6), (short black hair:1.6), (fluffy thick hair:1.3), (dark gray ears:1.1), (detailed canine teeth:1.3), dark grey paws, detailed fangs, black claws, detailed thin black eyebrows, Heterochromia, blue and green eyes, (crying:1.8), head on pillow, solo, pink hair, fingerless gloves, toned, toned cub, hands clenched in sheets, side view, looking to the side, checkered onesie

BREAK, volumetric illumination, (cinematic illumination:1.6), detailed fluffy fur, photorealistic, masterpiece, best quality, amazing quality, very aesthetic, 4k, high resolution, ultra-detailed, absurdres, newest, scenery, intricately detailed, masterpiece, best quality, amazing quality, very aesthetic, newest, <lora:StS_Age_Slider_Illustrious_v1:-2.7>
Negative prompt: worst quality, lowres, low quality, bad quality, bad male anatomy, (female, girl:1.9), bad female anatomy, bad explicit, poorly drawn face, bad face, bad facial expression, ugly, bad hands, morbid, deformed, disfigured, mutilated, malformed, missing body part, malformed hands, bad feet, fused legs, broken legs, bad body proportions, gross proportions, disappearing hands, fused hands, fused body part, fused legs, (fused digits, missing digit, extra digit), bad artist, bad background, cropped, watermark, username, signature, not in perspective, error, jpeg artifacts, squares, blurry image, not in perspective, plain pose, plain figure, old, oldest,, (human ears, human), claws, long hair, girl hair, pony hair, visible penis, blush on snout, green hair, muscular, bodybuilder, muscles, (old:1.9), (adult:1.9), (teen:1.9), tattoo
Steps: 35, Sampler: Euler a, Schedule type: Automatic, CFG scale: 5.5, Seed: 3078843434, Size: 1600x2400, Model hash: c4da45e49d, Model: novaFurryXL_ilV155, Denoising strength: 0.4, Lora hashes: "StS_Age_Slider_Illustrious_v1: bb11fa34470b", Version: f2.0.1v1.10.1-previous-669-gdfdcbab6

[To generate images I used the program "ForgeUi" and for corrections and Inpaint]