Show up on time, everytime with a smile!
Do everything you say you are going to do in the quote, then do alittle extra!
Leave the work area cleaner then when you arrived.
Drop cloths and vacuum cleaners.
Bill for exactly what you quoted.
When I look back over 35yrs I think this list would be a great start, goes without saying you need to do a quality job. Your smarts, excellent bussiness savy. Great natural personality and even tempermant, will make this alot easier then you think. You're a natural and will do well. In 2 yrs you will have 3 trucks, 3 guys doing installs, you'll be selling, ordering and checking completed work, with alot of free time in between. Enjoy!
Craig