I've never actually made paper craft before (I've done origami, not the same at all.) and I didn't realize that using PAPER for PAPER craft doesn't really work well. Apparently it works best with card stock. I don't have any of that. Damn.
EDIT: I made the camera from Portal out of paper. It's a little rough around the edges, but I shat bricks when I held it up to admire it. Only took about 3 hours or so.