This papercraft is a life size Magneto's Helmet, worn to protect Magneto from telepaths and Cerebro, from the 2011 superhero film X-Men: First Class, which based on the X-Men characters appearing in Marvel Comics, the paper model is created by [unknown]. You can use this paper model for cosplay.
In the early 1960s, the helmet was built by the Russians. It was given to Sebastian Shaw as a gift. Shaw wore the helmet to protect himself from Charles Xavier's telepathy. In Cuba, Magneto knocked off the helmet when Xavier was able to freeze Shaw. With Shaw now immobilized by Xavier, Magneto killed him with the same coin Shaw used to test his powers as a child.
After Magneto killed Shaw, he took the helmet and used it for telepathic protection. It is uncertain if the helmet Magneto wore in the X-Men trilogy was the same one he stole from Shaw or a different helmet altogether. [Source: wikia]
You can download this papercraft template here: X-Men: First Class - Magneto's Helmet Papercraft for Cosplay Free Download [DropBox]