We all are familiar with the face masks from our childhood days. And not only as children, but even as adults, face masks enthuse us (we do host and attend masquerade themed parties).
So if you have that craze for face masks and the patience to fold papers into structures, then the below-given link is just for you.
Click on the given link for a tutorial by Jo Nakashima to get step-by-step instructions on how to make an origami Guy Fawkes Mask. Although it is much complex than the ordinary mask you've made in childhood, it can definitely brush up your paper art skills.