No prob! If you wanna make it really easy do it like stereo guys do and get something stretchy and that absorbs well and stretch it to a rough contour. You can reinforce it with matt or cloth but you mix your resin and put it right on the cloth. Use body filler to shape it exactly how you want. That's my plan at least.
Got my old bow in headliner in most of the way, a pillars I spray bombed and mounted with Tacoma grab handles and one in the factory location. Tonight will get some pics tomorrow