For the best outputs:

Sampler: DPM++ SDE Karras

Steps: Any; cfg 2 ~ 5, CLIP skip 2

Neg prompt: empty creates very decent realistic pictures. Just add what you really don't want to see.

Pos prompt: no need of words like "realisic" or "masterpiece", but nothing happens if you use them.

It's capable to create art too if asked. Drawings, 3D, Paintings, ect.

The model isn't intended for NSFW, but it may create it without asking. Sometimes "nsfw" in the neg necessary.