The initial gen for this image was very dark. I brightened it in GIMP by using the Dodge tool once on the whole image then running Colors > Auto > Color Enhance. After that I used crude edits + inpainting to reposition the tail and remove an incorrect cutie mark.
The original image's PNG info is: pinkie pie, intricate detail, countershading, vibrant cinematic lighting, fluffy, (rusty:0.7), Convoluted, Precise, trending on 500px, depth of field, pony nanopunk (rendered in maya:0.8) by F. Scott Hess Sam Spratt Greg Hildebrandt Negative prompt: (bad anatomy compression artifacts (bitcoin:0.4) (salvador dali:0.5) CCTV surveillance sex penetration:1.2) ugly poor quality deformed (distorted:0.9) nft Steps: 19, Sampler: Euler a, CFG scale: 9, Seed: 149219730, Size: 512x512, Model hash: f74245c872, Model: pony-soup-v2 postprocessing Postprocess upscale by: 2, Postprocess upscaler: Lanczos extras Postprocess upscale by: 2, Postprocess upscaler: Lanczos