The base image was generated with Realistic Pony:

Prompt: score_9, score_8_up, score_7_up, score_6_up,
mlp, solo, anthro pony, fur_tuft, Fluttershy, bold eyeliner, dock_\(anatomy\), shy pose, standing, nervous smile, thigh gap, green thigh high socks, green panties, green crop top, indoors, inside dark bedroom, dark background, hard shadow, [amateur natural female equine with freckles in bedroom],
Negative prompt: feet, sunlight,
Size: 720x1280,
Seed: 1427229465,
Model: Photo_real_pony_XL_TA_excl_fp16,
Steps: 25,
CFG scale: 6,
Sampler: DPM++ 2S a Karras,
KSampler: dpmpp_2s_ancestral,
Schedule: karras,
Guidance: 3.5,
VAE: sdxl_vae.safetensors,
Denoising strength: 0,
Clip skip: 2