I made these Toiletry bags for most of the men in our family since they all needed them, and this was a gift that actually was homemade as well as liked and used.
Step 1Square up your fabric to the correct size I made mine 14x21
Step 2Turn Right sides to face each other and either pin or use binder clips to hold in place
Step 3Place the zipper and pin or binder clip it in place and sew one portion of it and sew it into place
Step 4Turn Right side out and top stitch that side of the zipper.
Step 5Turn over and sew in the other side of the zipper.
Step 6Then top stitch that portion too.
Step 7Since you bought a separating zipper, open the zipper almost completely, make sure the tube has the right sides facing each other, and sew both open ends shut. Make sure to center and pin so everything is lining up.
Step 8Measure out the squares in the corners so that the bags stand as tall as you want them to.
Step 9Cut out the squares on each corner and make them flat and sew together.
Step 10Trim the edges so everything looks nice, turn right side out and enjoy!