Many of us don't want to spend masses of bucks on window hint for their automobile. They'd rather try and do it themselves. DIY window tinting is a tricky job that takes much patience, time, and quality hint to be ready to complete the job satisfactorily.
The very first thing to think about is have you got the patience to weight out a template for the windows and be in a position to cut along the rear defroster lines for an ideal fit. If you believe this is too hard then I wouldn't try it. Also, if you don't have a full day to spend window coloring it could be too tricky for you to do. Often folk rush and try to be done by a certain time only to fail in the act. If you would like hint the back window you've got to cut actual lines around all the defroster lines to get it to paste correctly to the window. This is boring and takes an avid eye to get it right.
While those reasons will deter a few people, it can be done if you've got the time and ability. Be certain to buy quality hint before you attempt the job. Inexpensive hint is tough to work with and doesn't last. Many times folk have to get the job done again in only one or two years. Overall, if you can do this job yourself you'll save a handful of money. You've got to weigh the price tag vs benefit to determine if it's the right choice for your window coloring wishes.