Dear readers! :) As I got to know, here a few readers who are interest in a tutorial for how to sew a zipper, so I decided to make a few illustrations to make clear how this works. :) Hopefully this will help you! :)
> Sew the fabric scraps onto the endings of the zipper. Each end of the zipper has to be between to layers of fabric and will thus be covered.
> Now iron the fabric scraps. The seam to attach them to the zipper is now hidden.
> Put the fabric right side up and pin the zipper face down onto it. Use a zipper foot for basting (therefore, use a straight stitch for sewing the zipper onto the fabric).
> Now you need to pin one piece of lining onto the front pieces (right sides together), the zipper is in between. Using a zipper foot, stitch the upper edges together. The dotted lines in the illustration indicate how it looks between the layers of fabric.
> Do the same with the back and the back lining. After you are done with it, it should now look like on the illustration above.
> Now you only need to put the right sides of the outer fabric onto each other. Therefore, the zipper has to be open and you need to fold the pouch in half. Pin the sides and bottom edges together and stitch the two layers together. Don't forget to stitch back and forth over the zipper and on the ends in order to close your seam. Then use a zigzag stitch to sew the raw edges together.
Finally, do the same with the two layers of the lining. The lining's right sides have to face each other, then you can pin them together and sew the sides and the bottoms onto each other, leaving a small seam allowance. This time when sewing the layers onto each other, you need to leave out an opening so that you can turn the bag right side out after you've finished sewing. Later close that opening by hand, using a blind stitch.
In case you have any questions, just let me know, I hope this tutorial is useful for some of you! :)