Tools and Materials
13-by-16-inch 4-ply mat board
Double-sided adhesive paper such as Twin-Tack or spray adhesive
Mat or utility knife
1. Cover one side of the mat board with adhesive paper (or spray adhesive). Peel off remaining protective backing, and adhere a piece of decorative paper to it.
2. Download and print the letterbox template (above) onto the papered side. Mark the hole placement. Cut out the shape using a mat or utility knife, guiding the cuts with a ruler. Once the shape is cut out, cut along the rounded edges with scalloped scissors. Place the cutout, face up, on a flat surface. Score four lines (as indicated on the template pattern) to create the base of the box. When scoring, make sure to only cut about halfway through the mat board.
3. Using the leather punch or crafter's hole punch, make holes as indicated on the template.
4. Fold up the sides. Thread a 64-inch length of seam binding through the holes: Starting from the inside of box, thread seam binding through one hole. Bring seam binding back through adjacent hole, and repeat for the three remaining holes. To secure, first tie the seam binding in a knot, then in a bow.