Once you have a good idea how the adhesive strip fits on the surface, peel the neutral/clear liner off.

If you're applying a back cover or screen adhesive and it comes with extra material in the center, you may need to remove it before applying the adhesive.

Carefully peel away the center portion of both the liner and adhesive layers, starting with the cutout (if present).

Peel off and discard the remaining neutral/clear liner, exposing the adhesive underneath.