Here's my personal realism/2.5D model for Illustrious that I've been working on. It's really good for solo female and NSFW, of course.
My settings:
Euler A (automatic)/ Restart (normal)/DPM++2M (automatic)
Steps: 20-30
CFG Scale 4-6 (can go up to 10 but lower values generate better skin)
In the main prompt, I use:
masterpiece, best quality, amazing quality, very aesthetic, very detailed, realistic, 8K, NSFW
Danbooru tags will 100% work
In the negative, I've always used:
worst quality, old, early, low quality, lowres, signature, username, logo, bad hands, mutated hands, mammal, anthro, furry, ambiguous form, feral, semi-anthro
Additional: