hello,
your stitching is certainly acceptable.
What I would do is bring more consistency to the whole thing.
some examples
Photo 2 if you rounded the corners on the inside I would also do this on the flap, like the brown pouch
Photo 3 the same here the bottom of the rectangle are rounded, but the top is not, however here I would opt for a round patch. This way this stitching will also look nice around your magnet. The same for the inside of the magnet, a round patch would look quieter than the rectangle in my opinion
Also the thinning of the leather where the bend is looks a bit rough, maybe you can try to even this out by going over it with some rough sandpaper.
These are my remarks, about taste, shape and color you can keep arguing ;-)
Practice makes perfect