Look for lifting edges, visible cut marks in the paint, and graphics that don't line up across door gaps — good work aligns within 1-2 millimeters across a panel gap and tucks at least half an inch into recesses. Before booking, ask what film brand the shop uses (expect names like 3M, Avery, or KPMF) and get a 3+ year warranty in writing. Full checklist: wraptor.io/blog/how-to-spot-a-bad-vehicle-wrap.