I heard that you can make a finger protector in leather to use when sewing and that they work really great, so of course I had to try it. They DO work great.
I used a holepuncher intended for fabric to create the holes that i sewed in, with thin-ish yarn.
It's not super pretty, but it works!
Nice little project, congrats! What I love with this kind of project is that they're easy and it doesn't have to look perfect in order to work just fine. Plus it doesn't require a lot of leather so it's easy to make a new one later down the way, when you're more comfortable with your skills, just to appreciate the progress you've made.
Have you ever tried saddle stitch ? It would be a good start if you want to keep crafting!