You can try any model you want, however I really suggest using AutismMix Checkpoint
Note: I noticed it sometimes draws a crown, this might be due to the triggering word. You can just add it into the negative and it should be fine. I might fix this in a future version.
LoRA settings:
Weight: 0.7 - 1.0
Base model settings:
Steps: <30
Width: 896px
Height: 1132px
Sampler: Euler a
VAE: None
CFG Scale: 3 - 5
Clip skip: 2
Upscaler settings:
Upscaler: Latent (Nearest-Exact)
Upscale by: 1.5x
Denoising strength: 0.55