I doubt that it's worth the effort to try to make a glow fuel tank from fiberglass/kevlar and resin. Besides the unknown as to which type of resin is best it's a lot of work. Glow tanks are typically a lot smaller than kero/Jet-A tanks. There are numerous sizes and shapes available from several manufacturers. Just pick one that's closest to fitting and use a heat gun to deform it to fit. Just heat up the area you need to deform with a heat gun and re-shape it. I've pushed in a corner or flattened an area on a number of tanks and they all worked fine.

In addition to the commercially available tanks any nalgene bottle could easily be made into a glow tank. Also multiple tanks can be plumbed in series or parallel. My Yellow F-4 had the old 9 oz. saddle tanks in it when I bought it. That limited flights to about 4 minutes. I added two 8 oz. tanks for a 2S2P arrangement. With the hopper it had 5 tanks. As long as you use large or extra large tubing everywhere and pipe pressure you should have no trouble drawing fuel.