I think you should be able to generate your head on mobs heads because thay aren't used for much so I think you should be able to make them your game head
you can by killing yourself, there is a PS setting for it, and it is a 10% chance of dropping You can also get people's head by pvp
Mob heads are decorational items. Player heads are decorational items. Mob heads actually have more ofa use than player heads so... (spawning wither)