For best outputs and usage:

Sampler: Restart.

Steps: 30, cfg 8, CLIP skip 2.

VAE: none required.

Pos prompt: always start it with "score_9, score_8_up, score_7_up". Feel free to add quality words, they may improve overall quality some. Model stands weights but doesn't usually needs them.

Neg prompt: this one "score_6, score_5, score_4, (more than 1girl), (worst quality:1.5), (low quality:1.5), (normal quality:1.5), lowres, bad anatomy, bad hands, multiple eyebrow, (cropped), extra limb, missing limbs, deformed hands, long neck, long body, (bad hands), signature, username, artist name, conjoined fingers, deformed fingers, ugly eyes, imperfect eyes, skewed eyes, unnatural face, unnatural body, error, painting by bad-artist" plus what you don't want to see.