Make her skin, hair, and background completely white. It doesn't work that well, but if you could somehow make the mod of the head come in front of the penis and you did it so the penis was outside of her mouth, then a goo girl could be created.
If anyone wants to give it a shot, go for it.
Ickycrane[attachimg=1]
If anyone wants to give it a shot, go for it.
Ickycrane[attachimg=1]