I could use some advice. I recently made a full head mold of me using plaster bandages. What i need to know is to I fill that with WED clay then pour ultracal 30 in to get a true custom mask mold for my own head or do I build up the outside of the plaster bandage cast with clay about an inch to allow for shrinkage with latex, and build a two part mold from there? Please help, as I am stuck, and really want to move forward with this. I have many mask Ideas, one of which I want to build is Oderus Urungus of Gwar for halloween, but many other originals. I am just stuck on what to do with the plaster bandage head cast, which turned out great. Awaiting the guidance, and experience of you guys, so thanks in advance. Brian M.