This avatar papercraft is the Mask of Amon, created by Jaxmp. There is another Amon's Mask paper craft here: The Legend of Korra- Amon Mask Papercraft. And there is also a Amon paper model here: Avatar: Legend of Korra – Amon Paper Toy.
It should fit just about everyone, made to be printed on letter size paper, but should be fine on anything that isn't too different. Download to acquire zip file with the 4 pages of parts, page one is the center top of the face, page 2 and 3 are the left and right, respectively, page 4 is the mouth, it's a fairly complex build, but shouldn't be terribly hard.[via Jaxmp]
You can download this avatar paper craft model from here: Avatar: The Legend of Korra - Amon's Mask Free Papercraft Download