Papercraft is the foundation for many professional cosplayers. You build the helmet or armor out of cardstock (called the "foam core" or "paper base"). Then, you coat it in resin and fiberglass cloth on the inside to make it rock hard. Finally, you sand it, paint it, and add straps. This is how many screen-accurate Iron Man or Master Chief suits are made.
Follow the numbers printed on the tabs. Do not glue the entire model at once. Work in segments (e.g., "Build the head, then the torso, then attach them"). ultimate papercraft 3d download