This seems more complicated than it is, you can tell which strip I put on first and which one I did last . I had to make a new piece for the small window on the back, it was hard to get it to line up and eventually it was messed up beyond repair so I made a new one with some vinyl night at the auto parts store..I should add, the strips are cut in the same direction so they look different once in the door, the grain direction makes one look shiny and the other one dull and vice versa per side