For best outputs (both versions):

Sampler: DPM++ 2M Karras.

Steps: 20, cfg 5, CLIP skip 2.

VAE: none required.

Pos prompt: include the LoRa "add_detail" with a weight of 1 at the end of your prompt (included in my example runs for both versions).

Neg prompt: "(worst quality, low quality:1.8), (illustration, 3d, 2d, painting, cartoons, sketch), bad teeth, open mount, (nude)".

What changes from v9.0 to v9.1: input_image feature.

Checkpoint Trained.