1 Fold each edge of the zipper end piece under 3/8″ and press.
2 Fold each of the unfolded edges of the zipper end under 3/8″ and press.
3 Place the zipper onto the folded end of the zipper end and baste together. Fold the strap again. Fold along the center crease and press again.
4 Fold the zipper end piece in half lengthwise with wrong sides together and press. Pin and topstitch 1/8” away from the end of the zipper. Attach the other side of the zipper end in the same manner.
5 Fold and press a 3/8” seam on each short end of the exterior zipper panel. Fold the lining zipper panel in the same manner.
6 Place the zipper on the exterior zipper panel with right sides together. Pin the zipper and panel in place. Stitch the two using a zipper foot, sewing close to the tape edge. Backstitch on both ends to secure.
7 Place the lining zipper panel onto the zipper. The right side of the lining piece should be facing the right side of the exterior piece.
8 After sewing the zipper with the lining, flip the lining towards the exterior so the wrong sides are together, and press. Topstitch the exterior and lining zipper panels together 1/8″ away from the seam. Leave the raw seam.
9 Attach the zipper to the remaining exterior and lining zipper panels in the same manner.
10 Stitch the raw seams of the zipper panel to the opening seam of the lining bag with the lining side together.