I glued these 20 pieces (4 per side, 5 sides) to a 10x10x10 inch cardboard box. The eyes are painted purple and are mesh so you can see through them. I used black duct tape for the box corners; I'm sure there's something better to use. 

There are only 10 files but 20 pieces so some need to be mirrored in your slicer. Check the notes under the files to see which. 

I printed with 0.2 mm layer height so the different thicknesses end up printing in different directions which gives the mask a nice textured look.