My instructable is based on the 'less is more' philosophy. Excuse the camera, but it should be straightforward and logical.
Step 1: Silicone Mixing Compounds
There is enough material to make 200-300 molds. You don't need that much material, but you will need a lot for all the mis molds you will make.
Depending on your ear size, you want to make 2 small balls of each compound. The amount of compound you will need will vary with the size of the holes in your head, however, if each ball is the size if a small marble, it is too much.
You want the each of the balls to be the size of a pea. It doesn't matter if the balls aren't exactly the same size, close is enough.