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Tear off 8 to 10 equal-sized pieces of aluminum foil; make sure that each piece is big enough to cover your face. Stack the pieces together, then press down on them.  Scrunch the pieces, then straighten them back out. This will help them "stick" together better. This will create the base of your mask. If you prefer, you can use a full-face plastic mask from the craft store instead. Click here to continue. Take the entire stack of foil, and place it over your face. Gently press down on the foil to mold it over your nose, mouth, and eye sockets. Be sure to mold it against the sides of your face too. The mask should cover your entire face, from hairline to chin. Use a hole puncher to make a hole on each side of the mask at about ear level. Cut two 22 in (56 cm) pieces of string, then tie each string to each hole. Fit the mask over your face, then tie the strings together into a bow at the back of your head.  If you prefer a decorative mask, hammer a nail into the wall, then hang the mask from the nail. Use thin ribbon for a fancier mask. Match the color to the embellishments on your mask.

Summary:
Stack 8 to 10 pieces of aluminum foil together to make a thick sheet. Place the foil over your face and mold it over your features. Poke holes in the sides of the mask, then add string, if desired.