Bat Wings Harness Costume
Source: Martha Stewart
Extra felt layers help the wings stay upright. A rectangle of felt fastens the wings to a harness.
Print wing templates. Cut out 3 layers from felt. Layer together, and sew around the edges to create a 3-ply piece. Stitch lines, as shown on template, for "veins" in the wings.
Cut a 1 1/4-by-5-inch rectangle of felt.
Place it over the middle of the wings, wrap it around your pet's harness to secure, and glue the ends together.