To ensure a clean removal of the backmasking tape, first allow the paint to dry completely before removing the tape. Gently pull the tape away from the surface at a 45-degree angle, being careful not to pull too hard or too quickly, which can cause the tape to break or leave residue behind. If there is any residue left behind, use a razor blade or knife to carefully scrape it off the surface. It is important to remove the tape as soon as possible after the paint has dried to prevent the tape from adhering too strongly to the surface.