Chester: 

(feral:1.5), furry, solo, 1boy, 1male, presenting, outside, tail raised, tree, log, leaning. BREAK,
raccoon, young, brown eyes, black and white fur, naked, sheath, animal penis, balls, anus, BREAK,
masterpiece, best quality, amazing quality, very aesthetic, high resolution, absurdres, depth of field, newest, scenery, ultra-detailed, detailed eyes, detailed fluffy fur, dynamic lighting, 8k, HDR, ultra-HD, highly detailed, HDR, realism, realistic, photorealism, photorealistic, realistic lighting, caustic shadows,
Negative prompt: (worst quality, bad quality:1.2), lowres, low quality, bad male anatomy, bad female anatomy, grainy, noisy, render, filmgrain, text, deformed, disfigured, (female), (breasts), abs, extra fingers, bad anatomy, signature, patreon, web address, text, blurry, faded, antique, muted colors, greyscale, boring colors, flat, bad photo, terrible 3D render, glitch, cross-eyed, lazy eye, ugly, distorted, glitched, lifeless, bad proportions, watermark, window, human penis, vagina,
Steps: 40, Sampler: Euler a, Schedule type: Karras, CFG scale: 5, Seed: 3148173651, Size: 1024x1024, Model hash: cab478b74a, Model: novaFurryXL_illustriousV100, freeu_enabled: True, freeu_b1: 1.01, freeu_b2: 1.02, freeu_s1: 0.99, freeu_s2: 0.95, freeu_start: 0, freeu_end: 1, Version: f2.0.1v1.10.1-previous-669-gdfdcbab6

Then img2img after some painting:

feral, furry, solo, 1boy, 1male, presenting, outside, tail raised, tree, log, leaning. BREAK,
raccoon, young, brown eyes, black and white fur, naked, sheath, animal penis, balls, anus, BREAK,
masterpiece, best quality, amazing quality, very aesthetic, high resolution, absurdres, depth of field, newest, scenery, ultra-detailed, detailed eyes, detailed fluffy fur, dynamic lighting, 8k, HDR, ultra-HD, highly detailed, HDR, realism, realistic, photorealism, photorealistic, realistic lighting, caustic shadows,
Negative prompt: brown fur, (worst quality, bad quality:1.2), lowres, low quality, bad male anatomy, bad female anatomy, grainy, noisy, render, filmgrain, text, deformed, disfigured, (female), (breasts), abs, extra fingers, bad anatomy, signature, patreon, web address, text, blurry, faded, antique, muted colors, greyscale, boring colors, flat, bad photo, terrible 3D render, glitch, cross-eyed, lazy eye, ugly, distorted, glitched, lifeless, bad proportions, watermark, window, human penis, vagina,
Steps: 40, Sampler: DPM++ 3M SDE, Schedule type: Karras, CFG scale: 5, Seed: 2431637639, Size: 2048x2048, Model hash: cab478b74a, Model: novaFurryXL_illustriousV100, Denoising strength: 0.45, freeu_enabled: True, freeu_b1: 1.01, freeu_b2: 1.02, freeu_s1: 0.99, freeu_s2: 0.95, freeu_start: 0, freeu_end: 1, Version: f2.0.1v1.10.1-previous-669-gdfdcbab6 

Then inpainting as well as color corrections/painting in Paint.NET, followed by upscaling: 

Postprocess upscale by: 1.4, Postprocess upscaler: 8xNMKDSuperscale_150000G