Original image With simple silhouette edit in paint. Also it was really hard to enable blur in output
Positive:nude amy rose, child, loli, <lora:Amy_Rose_IL:0.9>, furry female, standing, outdoors, night, sky, stars, trees in background, lens flare,(long tail:1.2), (long hair:1.1), red boots, view from behind, (yellow crotch:1.1), featureless crotch, thin legs, ass, masterpiece, best quality, (bloom effect:1.3), (glow effect:1.2), (blurry:1.5), blending colors Negative: worst detail, black outlines, (sharp:1.4), (collar:1.1), (in focus:1.2) Steps: 45, Sampler: Euler a, Schedule type: Automatic, CFG scale: 7, Seed: 836649298, Size: 896x1314, Model hash: 178fc987b2, Model: waiNSFWIllustrious_v90, Denoising strength: 0.6, Lora hashes: "Amy_Rose_IL: fffb62ab9d57", Version: v1.10.1
Added variant with more cartoony two-colored butt
Positive: young amy rose, nude, standing, outdoors, night, sky with clouds, stars, trees in background, lens flare, (extremely long tail:1.1), long hair, red boots, view from behind below, masterpiece, best quality, (bloom effect:1.3), (glow effect:1.2), (blurry:1.2), blending colors, white gloves, sonic x (cartoon:1.1), thin legs, (yellow crotch:1.1),
Negative prompt: bad quality,worst quality,censor, sketch, wide hips, black outlines, (sharp:1.4), (collar:1.1), (in focus:1.2), gluteal fold, ass