How do you tint a 1966 Mustang Fastback?

Answer 1: You may want to pull the back glass. This will help you avoid contamination or gaps. You may also need two to three people to help you with this window. Two people can stretch the film, while a third individual can focus on shrinking. 

Answer 2: Trim the inside of the gasket and shrink the top portion before moving on to the lower portion. Proper cleaning is very important if you want to achieve good results with this back glass.