The file 'Skyrim Dragon Priest Mask 3D Printer Model' is (stl) file type, size is 1.7MB.
I modelled it with a flat back so that there was an easy surface to align to, but I can't see this thing printing as one piece without a lot of supports on the inside given how concave it is.
You probably have to play with the scale, too.
dpmask.stl | 8.3MB |