Putting graphics/decals on corrugated rv sides?

Hello! Our 5th wheel trailer is the stick & tin style with corrugated alluminum walls. It is very plain looking and we would like to add some color to the plain sides to make it look better? Flat sides seem easy as I have done decals befote. How are corrugated sides done? Is there someone who could do a good job and how much would it cost? We are just looking for simple graphics, nothing crazy.