Grab a picture of your friends(or take a new picture), wear a mask for them. See how you look like wearing these masks.
Therere 100+ masks you can choose from. All kinds of masks, Venetian masks, Party masks, velvet masks, Feather masks......
You can edit these masks(rotate,scale,mirror,copy,delete).
You can save these masked pictures back to Album, then you can upload to facebook or whatever you want.