1. Make a pattern. Center a 3x5-inch index card on the bottom edge of a sheet of 8-1/2x11-inch paper. Trace around the sides and top. Trace around the card two more times, each time placing the card just above the last tracing.
2. Draw. You will need to draw a head at the top and arms at the sides of the tracing. Cut out, cutting a wavy edge at the bottom.
3. Trace pattern. Use pieces of white construction paper. Use a hole punch to make eyes and a mouth.
4. Fold the invitation. Bring the arms toward the center and crease. Fold the top third of the card toward you, and the bottom third up. Print "PEEK-A-" on the outside and "BOO!" inside, along with the party information.