+xTo keep costs down, you could start by practicing with fibreglass rather than carbon fibre. Both the cloth and resins are a LOT cheaper but the mould making, layup and curing processes are virtually identical. The curing times for fibreglass resins are much shorter than for the carbon versions so the learing process is shorter also :-) For making panels for your camper, I would personally use fibreglass anyway and I am a carbon fibre fanatic!
Oddly enough, my initial thought was to do a fiberglass finish similar to a strip canoe finish. Looks super cool, but cedar strips are more expensive than fiberglass and carbon fiber combined. Decisions, decisions. Maybe I'll play around and make some tabletops with carbon fiber, or something.