Hare are a few hints I wanted to pass along:
Add some fusible fleece when you make these zippered pouches - it really helps to give it some stability and weight. I'd suggest using Pellon 987F.
Did you know you can change the length of a zipper? All you have to do is whipstitch with double thread 8-10 times where you want the zipper to stop, then cut off the remaining zipper about 1/2 inch from there.. that's it! I did that for the skull one, since my sister wanted to use it as a small change purse. I started out with an 8 inch zipper and now it is about a 5 inch zipper.
When I am making my "zipper sandwich" if you will, I also add pins to the part of the zipper I am not going to be sewing. This helps keep your zipper straight and it won't move on you as you sew. (If this doesn't make any sense, let me know and I will post a picture of what I mean next time I sew one!)
Trust me when I say that if I can sew a zipper, anyone can! I was so afraid of trying it, but once I did it, I found out it was not nearly as hard as I had built it up in my mind to be. I've still got a long way to go.. these little pouches are far from perfect... but I am definitely enjoying the challenge.