car wrap design

I own a car wrap shop, We wrap car, truck, van, bus ..we also create banner etc..I just lost my designer and need a freelance to do my design..Since it the first time a deal with this kind of service, i don't where to start. The design must know how to design for the final print since it be apply on curves surface ( car bumper etc ). I will give to the design the exact measure of the car canvas in illustrator with each side of the car include. Design must be do in illustrator, guide line of the design need to be disccus..( what kind of backgroup..compagnie logo usually in already done by the customer ). So if any professionel have already done those kind of work..let me see your portofolio and an estimated of your pricing.