For designs that wrap over an edge — like a laptop lid that continues onto the side — resist the temptation to fold the vinyl straight over the edge in one motion. Pulling directly from the top surface over the corner and down the side traps air right at the edge, leaving you with a visible bubble line that's difficult to remove after the fact.
Instead, start at one end of the edge and work gradually along its length, rolling a small section of vinyl over the corner at a time. Use your squeegee or thumb to press the material down and around the edge incrementally, advancing a little further along the edge with each pass. Think of it as a slow wave moving down the edge rather than a single fold.
This technique also keeps port cutouts and other edge features in proper alignment. If you fold the vinyl over the edge all at once, even slight distortion can shift the material enough that a port cutout no longer lines up with the actual port — and at that point, correcting it means lifting and restretching, which compounds the problem.