Thanks everyone for the advice! Will definitely do a light coat first. And I also put these beam sort of things on the inside (came from the pep file) to hold the shape.
I am a beginner, and this is the first time my brother and I are making a Halo helmet. (Mark VI). We finished the pepping, so now we're ready for the resin.
Is 1 quart enough? (https://www.amazon.com/3M-20122-Purpose-Fiberglass-Resin/dp/B003ODJ8J4/ref=sr_1_1?ie=UTF8&qid=1518997848&sr=8-1&)...