I've been meaning on helping out a few people on how I make my teeth. I use Super Sculpey and to make my molds for my teeth, I use Crayola Model Magic (any color, it doesn't matter.) Keep in mind, these pictures of the skulls ARE NOT MINE! I didn't take them, but I do own similar skulls at home. After I form the tongue and make sure it doesn't mess with the jaws (them closing and opening) I glue it all in and I paint them. It's quite simple, if you have some skulls I guess. If you don't, you could always visit your local vet clinic to find out where you can get a few. Or if you're a hunter like me, you can just go harvest one yourself. I purchased my skulls at a local Trappers convention a few years ago so don't go chewing me out that I shot some poor little animal. It drives me nuts when people do that. These particular skulls are being used for science and education.