That is a fine looking early effort.

If I may offer some thoughts?

It looks like the hanger loop is made of the same leather as the body?
If so, I would suggest using a piece of very heavy leather, like belt leather itself. This would make a sturdy loop and also stiffen the back.

A heavier loop would also resist wear better. If you use a thicker leather for the loop, you may also get a tool to put a smooth edge on the loop before you sew it to the body. Tandy has these edge slickers. This will probably require applying dye to the leather to get the black color (don't forget the inside of the loop!) and a leather finish as well.

Keep trying new variations. I did about 10 before I ever got one that was decent to sell, and even after about 35, I'm still finding ways to do it better.

Best wishes,
Tom