so, if i want to do a zipper like this, i measure the width of how much of the zipper i want to see exposed and the length of the zipper. then i can draw a little rectangle. so, i would be drawing the width of the zipper and then wherever the bottom of the zipper is. then, i can just cut that box out, place the zipper underneath my box. again, you probably want to use fabric glue to hold your zipper in place. then you can see i just did a straight stitch all the way around the perimeter of the zipper along the sides and along the 