The trick to those is keeping it REALLY clean where you're working. We always then took the tint with the backing still on and got a basic size (like I mentioned cutting an inch or so larger) then layed it tint side down across the seat/speaker ledge (whatever is there). Then we worked from the bottom of the window up just pealing off the backing as we worked our way up. It really isn't too bad. The worst part about those are when they put the stupid defroster wires jutting (sp?) from the window.