Yes. And Marines are a lot easier. So Marines it is. How am I going to make the green box thingy that they record info with? Also, how should I attatch pieces? Glue? Tape?
I was once going to do one from Tom Clanceys Ghost recon. I came up with the idea of bending a small strip of sheet metal and sticking a green LED through it.
Card board goes together nicely with a hot glue gun. i had to do an art project last year that was entirely made out of cardboard and hot glue and it is awesome just do your best to make sure that you can't see too much of the glue. it will look alot better.
I personaly think you should tackle the Halo wars marine helmet.