I took a 14 week class (1 night a week) a couple years ago on auto painting. I've been a car fanatic all of my life and have done a little painting over the years. This class was just enough to make me dangerous. I'm no expert by any means but it was a great start for me. Painting can be very rewarding, but I've suffered through some frustration as well. I will say, experience is the best key!!

Also, I'm a graphic designer (freelance too), which has helped me alot in designing graphics for cars. If you do have difficulty coming up with ideas, thumb through some magazines for inspiration.

And if you ever need help, let me know...designing paint schemes is my specialty!