I couldn't find black material anywhere, only silver, so I managed to get a bunch of black windshield cover sheets for cheap. One is cut under 1/2" to small now so it stays but the folded edge makes it want to lift off, what should I do just build up some layers of black tape to make it slightly larger so it sticks into the window better? Trying to see what other people are doing before I start experimenting since I have exactly enough to do all my windows right now and the store doesn't have any more black ones. #lifestyle source