Step 8: Closure Style 1 - D Rings
Cut a 2x4" strip to secure your D rings. Fold 1/2" inwards from each edge and press. Trim the corners. Then loop through both D rings and line up the ends so you are left with a strip 1.5" long. Pin, then stitch around in a square to secure. Take care that your D rings are clear of the presser foot; it helps if you start your stitching on the side next to the D rings. Stitch the D ring tab to the top "lid" of your bag.
Cut a 2x13" strip for your strap. Fold 1/2" inwards from each edge and press, and trim the corners. Then fold in half to get a 1x6" strip, and stitch all edges. Stitch the tab to the lower edge of the bag opening, across from the D rings.
To close, thread the strap up through both D rings, then down through only the lower D ring. Pull tight.