If you decide to get into FG, I have a few tips. First, examine your market. Are you looking toward residential or commercial. If you are green in FG, starting in resi is a better option. Commercial contractors won't give you the time of day if you can't perform, carry significant insurance, and have a problem waiting for money. With resi, first thing to do is clean up your act. Far too. Any "tinters" show up in some type of Honda of Toyota with wheels that look like they are on broken axles, Sterio blasting some Snoop Dog crap, and dress like they should be selling a 50 rock in some back ally. People don't want this on their property let alone in their home.
Dress like you are going to a job interview...where you really want the job. You must learn, know and understand your product, as well as every other product your competitors offer. Know the pros and cons of all of them and be ready to explain them in a way a 5 year old can understand to the homeowner. Know what the different glass types are and how film effects them, know what your costs goin in are and what your costs going out will be. Be able to show the homeowner how the film will work and benefit them via some solar tool. IE BTU meter, heat lamp, UV card etc. Have nice, well laid out and glossy pamphlets that back up your sales pitch that you can give to the homeowner.. Bring pieces of film with you that you can actually install on the glass if needed so the customer can see it on their home.
This business is such a blind purchase transaction, what this means is that it is really no different than being a painter, carpet installer or even a mattress salesman. People are buying blind, they have no idea how paint, film, carpet of mattresses are made... And they really don't care. They just want someone to solve a problem.
I can go on for days about this but it's basic business sence and practices.
..Now Commercial.... Which is our primary business, is a different animal entirely. On the front end making the initial contacts it's similar to resi. Meaning you need to show a strong knowledge of product and present your business in the most favorable light possible. But after that it's all about the numbers and performance. Commercial contractors don't give a shit if you are "the best" .. They want you to get in, get out, and not mess up their hair. Just do your job, quickly, as cheap as possible and without causing them any problems.