I'll be honest I don't know much about how to make models or anything I just really like this checkpoint merge I put together of Exquisite details极致华 and GhostMix v2.0-BakedVAE

All credit to them for these two amazing checkpoints

I currently use DPM++ 2M Karras as the sampling method and hires fix with R-ESRGAN 4x+ Anime6B and it seems to work pretty well

FastNegativeV2 and Asian-Less2-Neg work pretty well as textual inversions but I haven't had great luck using textual inversions for hands so far. Let me know if you find anything that works!