That's going to take a hell of a lot of work to fix up right, hun... if you've popped resin on that already and it's good to go, then I'd seriously suggest starting again. If not, then for the love of Jesus and dead puppies, put some stuff in there to make it more sturdy before you do.
this isnt ment to be mean, just honest. gets LOTS of bondo or start again. sounds cruel but i dont want you to waist your time. for a first helm its a good job but i dont think it'll stand up to resoning.
Ya i agree. I would start over, and leave the visor in as a start. It took me four tries for my first pep helmet. The first time, there was a big fat red line in the 3d model in the pep designer that i missed. Second time was stupid. I lost pieces. Third time, I made it too big, and i finally got it on my fourth try. Heres a pic of mine. Still need to resin and glass. Sorry, its really blurry.