If you don't want such a large bag, use a hand towel and continue with the directions above. Use 1 yard, which is 36 inches, of cording.
You can also sew a simple handle by cutting 2 lengths, 12 inches long of webbing. Sew a handle on each side of the bag. This handle won't fit over the shoulder like above, it will just be a handle to carry in your hand.