How do you line a messenger bag?
Place the Inner Bag inside the Outer bag, so that right sides are together. Line up the top raw edges of both bags, making sure the side seams line up and that the Strap Tabs are sandwiched between the two bags. Pin or clip in place.
How do you sew a zipper in a bag without a lining?
If you aren’t adding a lining to your pouch, unzip the zipper. Then, pin the sides together, right sides facing, and sew around the three open sides, using a 1/2-inch seam allowance. Trim any excess from the corners and edges; Then, use the zipper opening to flip the pouch right side out, and you’re done!