This is a first try, so don't expect too much. Wanted to keep it bloody simple, I like dark theme.

Steps: 28 (more should give slightly better quality, but loong gen time)
CFG: 4
Sampler: euler
Scheduler: normal
Im also using CFGZeroStar, RescaleCFG: 0.3, Self-Attention Guidance: default)

Upscaling helps a lot and I couldn't live without inpainting. :3

That's what i use so far, you can try what works for you the best..

Positive prompt:

number of characters (1girl/1boy), character name, artist prompt, scene/environment/camera angle, action, expression, items, quality prompts (masterpiece, best quality)

Negative prompt:

lowres, worst quality

Make sure to use UI that supports v-prediction, otherwise you will get a noisy blob!

v2:

Started fresh, this is a more bare-bone version. (see about version for credits)

v1:

Started fresh, with similar base, but different weights, i liked it more, merged a few LoRAs with base NOOBAI-XL v-pred and then with 2DN checkpoint. (see about version for credits)

Seems to be better overall, keeping the dark esthetic.

Prototype:

Merged a few LoRAs with base NOOBAI-XL v-pred. (see about version for credits)

Enjoy!