Carbon fiber fabric is very expensive, and hard to get these days; thanks to the new Boeing 787. I'm not sure, but I think that there are only a few factories in the world that produce it.
I noticed that if you try to go to a site on line to learn about how to lay up fiberglass or composites, they are very difficult to understand and usually the information is convoluted. Laying up polyester is pretty easy. Usually Epoxy based resins are better for RC. Lighter and stronger, but expensive and time consuming. I recommend buying some light glass fabric, some mold release wax, and a quart of epoxy resin and catalyst. Practice making different ply plates. You can make mold plugs out of wood, balsa wood, bondo, plaster of Paris or whatever. As long as they finished perfectly smooth, and hard, they will work fine for making a mold. I wouldn't try carbon fabric until you are proficient with glass cloth. It really sucks when you screw that stuff up.