Very nice! You still need a bail or jump ring of some kind or the pendant will dangle sideways. Unless you put a loop of leather through the hole and pass the ends through the loop, then it will hang straight. The center pendant of my mosaic pendants is on 2mm leather cord. Either you need to make the necklace 24" long so the person can pass it over their head, or you need a clasp of some kind. Michaels has glue-in leather end caps with rings if you want to go that route. Then you could attach a lobster claw clasp or whatever. Or there is a way of making adjustable knots in your leather so the length of the necklace can be adjusted. I personally don’t care for this option since you can see the doubled cord if you are making the necklace shorter, but at least you don’t have to use any hardware. Here’s a YouTube link to show how to tie the knots:
