As a bonus, keep the paper patterns, just in case you ever need to repair body damage... or his brother wants the same design. :-)
This to me this is very important...it will save so much time if you already have the pattern and need to do a repair. I've had situations where the customer has loved the flames but grown tired of the main color of the body, having the pattern has save you a lot of time and the customer a bunch of money. If the brother wants the same design...they better be twins...LOL.