I recommend using Euler sampler, scheduler beta, cfg 1, it's better to use another model instead of the basic flux model like STOIQO NewReality | FLUX.

This is a prototype of a real cat, she is on instagram and her name is Marla “Buscemi” Cat. Training took place on civitai and on 7 photos 1024x1024 with captions, captions made through the program Joy_Caption, from the captions was removed description of the background, left captions under each photo only a description of how the cat looks. The training time took 42 minutes, cost 2200 BUZZ. The training took place on the basic model Flux DEV.