If you've come here looking for self-help, this is probably the wrong place. This is a tutorial for people who are already ego-tastic enough to want to make more of themselves. Not in the traditional sense, and not even in the cloning sense. You'll see.
This is, alternately, a creepy-doll mask tutorial. Hard to be sure.
Step 1: Make positive of face
First, you're going to need a positive of your face. Your face, but one that won't get burnt if it suddenly touches something that's 500 degrees.
I made mine using my Plaster Face Cast tutorial
There are other ways to make a mask of your face than that described in this and the next step, but this is the most accurate way, I think.