Choose from any of these superhero masks or masquerade masks. Print out the file on A4 or Letter size cardstock.
For a more durable mask, cut out the paper template and trace around it onto felt or fabric. Cut out the felt or fabric mask, including the eye holes. Sew the ends of an elastic band onto sides of the mask or attach an elastic string following Steps 5 and 6 above.
Glue (use fabric glue or tacky glue) or stitch on decorations like fabric shapes, buttons, beads, and other notions.