Lora strength from 0.5 to 1.0 is suggested. The stronger the Lora is, the less likely it will produce non-realistic results, but more curves are likely.

It is also a bit finicky with breasts, sometimes the tits do not appear. You need to put the keyword naked in either the positive or negative prompt to increase the chances of good results.

Also the "doll" keyword is needed in the negative prompt as some reference models looked a lot like a doll and the diffusion process can get confused and will put some body parts in yellow which it thinks belong to a doll...