Instructions are in the package. Clean the surfaces with an alcohol wipe. Place the Snakeskin where you want it, mark the spot lightly with a pencil, or some type marker that will be easy to remove. I used blue painters tape, to outline where I wanted it. Then you can check all around, both sides, for uniformity. Peel off the back, and stick in place. And yes, as Draxsr says, the warmer the better!