For the teeth use white felt, pencil, scissors and the yarn.
1. make a teeth, you make the choise which shape they are.
2. cut them out.
3. place them in a row and attach them together with the yarn (this is to make the sewing easier).
I made teeth in different sizes, because I think it wil be a baring row if they are all the same size. Also I used the scraps from the eyes to make the little teeth.