Okay listen.When i checked danbooru tags, there is cave paintso before i so curious and try it but seems not success. So i made model that boost that prompt.used 1.0-0.8
CFG: 2-3.5 (no need high cfg)
Step: 20-24
Sampler: Euler/Euler aif you use below of that sometimes they look like human/living thing in cave.
