have at least 6 months worth of bill paying power, not a credit card either....if you put your bills on the credit card then you will spend a lot of time in the hole...this means your bills too, not just the shops bills! If you have a sugar mama,or sugar daddy, you might be able to just have enough for shop bills...
get a in good sized shop where you can fit one car/SUV at least with plenty of moving around room. One with a front office or something that separates the garage from where people are is always nice...
research local pricing, research how long the competition has been around and what they sell. How will you take business away from them? Have examples of different tint choices for the custy to see....the more you show them and the more you know about what you are selling the more educated your customer will be on selecting the right tint for their car...stay legal if you can...(we are only able to because we have other products to pay the bills)
Get about 1000 nice business cards, don't make them yourself, you want to appear as professional as possible...and really find out what, if any, the complaints on the competition are. You might be up against a really nice shop or a really crappy shop, but be prepared for the dumbest of questions...have a grand opening sale if your area is big enough and offer free t-shirts, gift cards, or some discounts on the first 20 customers to get your name out there!
Right now, all the local car shows are taking off, put your car in if you have a nice tint job, and it helps to have a pretty car, display only, put BC all around the glass, dress professionally, actually dress to get the customer you want, if you wear sweat pants to introduce yourself, you will get sweatpants custys...not that I don't wear them, but not to car shows...remember you are selling a product that everyone "knows" about, so in reality you are selling yourself...God bless in your pursuit life, liberty, and happiness....