Step 2: Seal it in.

Picture of Seal it in.
Add cotton and latex and build up the structure. Shape the cotton with the liquid latex and a brush, you need to end up with the cotton sandwiched between 6 layers of latex, 3 below and 3 above will make a very strong, soft, pliable prosthetic. Remember to feather out the edges to a very thin layer so that it will blend into the skin.