See more about this at So Sew Easy - https://so-sew-easy.com/how-to-sew-fly-front-zipper/ See - its just a series of a few very simple steps. All easy enough to do, no need to sew absolutely perfectly. Just carry them out in the right order and you can easily sew a pretty neat fly front zipper in your pants, skirt or shorts. There is no need to be deterred by that fly front zipper - you can do it. Maybe practice first like I did and you'll soon be confident enough to try out the pattern. When learning a new skill, you can always practice on scraps first before using that new skill on your real project. No one ever does it all right first time, and practice makes perfect!