When you pull the clear film of the tint, your spaying the sticky side of the tint too right. If not do that. It keeps the tint from sticking to itself and adds a little weight so it don't try and roll back up on you. Don't waste your money on that tint spray. All I use is a little dish detergant mixed with water. Works really good and helps slide it into place on the window. Also when you start to pull the clear film off, spray your fingers. Keep them from sticking to the tint and not leave finger prints. Hey, practice makes perfect. Won't get good at it until you start doing it.