Artist's resources:

https://www.pixiv.net/en/users/1769484

https://yamada.fanbox.cc/

Recommended samplers:

• DPM++ 2S a - 18 steps

• DPM++ SDE - 18 steps

• DDPM - ~28-36 steps (Recommended)

• Euler A - ~28-36 steps

Recommended upscale settings - here.

Recommended checkpoints:

WAI-NSFW-illustrious-SDXL

Falafel MIX (Illustrious-XL)

V-Pred version is here. Check it out as well.