These are some of the process photos I shot while working on the Planet of the Apes makeups and costumes. I made alginate life casts of my husband and myself. Then poured plaster in the life cast to make a positive copy of our faces in order to sculpt the appliance on top.
This step isn't necessary, but I often like to paint the life cast with an acrylic color that will match the color of the clay I'm going to be using. For these particular pieces, I used Van Aken clay in orange.
Here are the final Zira and Cornelius sculptures.