To create you mask it’s very easy :
1) Pick up the one you like and click on it, this will open a new window.
2) Then click on “File”, then “Print”. If possible, print it in color and on a big sheet.
3) Cut along the line with your cisors, and cut out the pupils. Be careful when you’re using them.
4) Take a rubber band to put it through the two holes. Then make a knot on each side.
5) Done ! Have fun !