1) Completely clean the case surface with rubbing alcohol or water and dry.
2) Carefully peel the backing paper from the decal at a sharp angle.
3) Align the decal with the seam of the case and press it on. Firmly run a credit card across the transfer tape to make sure the decal adheres to the surface.
4) Slowly peel the transfer tape from the top of the decal. If any part of the decal starts to come up with the tape, run over that part of the decal with a credit card and peel the tape again.