Yes it would be a problem. Did you use 110lb Cardstock paper? Have you resined the helmet yet? We need more info please.
You should try using skewers or straws or sticks of some sort to give it strength while you resin.
Listen carefully! The atomic structure of the paper is failing! You need to get that thing out of the house right now before there's a total atomic structure collapse!
In about 3 hours the protons in the structure will completely decay, causing the electrons to begin colliding uncontrollably. The resulting explosion will have the force of a thousand suns! Get it out of there!!!