I put the finished piece in a box and then poured silicone over it in order to make castings to give to friends for Christmas.
Everything starts as a bunch of aluminum foil. No matter how simple or complex, all of the sculptures I do in Super Sculpey are full of foil.
First layer of sculpey. To cover the foil. Then I bake it, so that it's a stable surface to apply more Super Sculpey to it. I marked the opening of the egg on the top with a blade tool.