So I want to try and upgrade the armour to fiberglass. I did a chest piece out of cardboard and did 2 layers on the front and 1 on the back. Actually looks fairly good, but very thin, measured at about 1mm maybe 1.5mm. What is the recommended way to do fiberglass armour? Should I make molds using my existing armour which is about 5mm thick and then fiberglass using the mold or can they be 'freeformed' over cardboard or a similar material?