Start by making sure your zipper is clean and dry. When I rinsed mine, it actually bled some blackish color and I’m not sure if it’s because the zipper is second hand or if it’s because it looks like it has weird black marker on one side or not. But get that mess out before you move on. Us a little soap and water and let it dry before you use it.
Next, decide how long you want the earrings to be. I tested it out and ended up doing about 12.5cm.
Making earrings works nice because you just cut both sides at once and you have two equal earrings.
Once cut, make sure you get the zipper stopper off the end if you have it, and then trim the fabric off the zipper. You want it thin enough that it will look nice bent, but I also wanted to leave a sliver so you could see that color of the zipper come through.
Finish it off by fray checking the edge so the fabric doesn’t fray.