Burning skulls?... no problem. This is good at creating horror and realistic burning corpses.
Since it is trained on real crematorium view-port footage it will sometimes show black borders of the view-port. It also has a tendency to make low resolution, blurry or overblown images. in which case write 'vhs' as negative prompt.
It is also good at showing realistically burning people.
Key word upright is for turning the skull upright
Key word lying on the back, is for a more realistic skeleton pose
model works great together with my Inferno model