That'll be OK as long as he does a good job. I didn't want any "raised" paint on the car, but I guess i could clear over it. Ask him what he would charge for something like that. Do you have any samples of his work? Did he do your work?That's an easy one! I know a great artist who charges TWO arms and TWO legs!
Are you looking for a hand painter or does it have to be done with airbrush? (I.e. a design, flames, etc) My neighbor knows a great hand painter, let me know.