Stripers' abilities, general styles and such are as varied as can be. Before you chose who to go to, watch all the striping in your area, and check out the signatures to see who did it, or ask the owner of the car. Then go check out their portfolio. Alot of stripers don't have websites. And some guys, like my hubby, may have signs as their main 'thing', but do striping as well. (And pretty darn well if you ask me...!
)
The best way to go is to find someone who's work you really like, give them a general idea of what you want, and colors you absolutely hate/love... then let them go with it. Most stripers who have been doing it, and doing it well, for many years, know colors, placement, etc.
In striping, same as signs, everyone generally knows everyone else in the area. Hubby can walk thru a parking lot, and I swear from 30 feet away, tell you who striped what car. Depending on where you're located, I might be able to get you some names to check in to.