helps a bit upside down full body and face

dont expext any special poses, or face expressions
The (great) Juggernaut model is also not good at representing people upside down (its not trained)!

use also in adetailer with denoise 0.6

prompt:
upside down, one face, young woman, (freckles:0.2)
<lora:face_upsidedown:0.8>

this helps also:
https://github.com/ototadana/sd-face-editor

read my article
https://civarchive.com/articles/5002/face-swap-with-adetailer-and-reactor
Unfortunately it works only good with small faces non upside-down ! ;)