I got my eyes finished and glued into the head tonight!

They are made as follows:

The eye is printed on label paper, and the pupil is cut out. The label paper is stuck onto two sheets of window tint that are stuck sticky side together. Then a piece of whte foamie is glued on the back for support. Next a strip of white foamie is glued around the foam base and cut in a curved shape to make the lining of the eye. Lastly, a piece of clear vinyl is glued on top of the foamie edge to give the eye the clear sheen.

Based on a tutorial by TinyBadger on youtube.