Looking good carpathiavh99, looking good
I like your underarmor, I'll start making mine after the holidays. Based on the Bluerealm and my trusty 12" MC from McFarlane.
One or two things to help you: Warping can be cause by to much resin in your pieces = to much heat when it cures. Ad some struts to keep the form, could be cofe sticks, big slush straw or some sturdy carboard.
When I've done the fiberglas in my parts I used a mix of home made rondo and resin at the same time. Put some rondo where you think it will be hard for the fiber to stay in place, like in corners, recess, strange details and small edges. Then put your precut fiber over it and add resin, with a brush remove the excess resin to keep the part lightweight. You dont have to do a part in one shot, do one half in each shins, wait for it to cure, when the heat as come down do the other half's.
Preparation is the key when doing fiberglass
The brown stuff you see inside is rondo, under the fiberglass
Hope it helps