Originally Posted by R240NA

I tinted for a few years too, and the common automobile owner doesn't have a chance in hell of doing a good job. Even reading some of these replies I'm cringing. For one, you can't use a carbon blade on glass without leaving marks, razor blades and regular Olfa blades will cut into the glass. Secondly, rear windows or ones with curvature really need to be heatedshrinked to the glass before applying it.
I'm sure the people replying who say their's turned out good are comparing it to total ass, which in most cases should look better, but that doesn't mean it's right and it will last. Plus I don't see any reason why you shouldn't trust the tinter, if you're there with the car do you really expect them to do a banzai run up the highway? If anything, take off the door panels, rear deck, any parts to make thier job easier, they'll appreciate it.