Pretty darn good for your first complete holster.
All the feedback above is good on the stitching. It's hard to tell from the pics, but the edges look not quite slick. If they are then you can ignore this, but here it goes. The edges, like the stitching, takes time and attention. I personally use a wood file to rough shape the edges, then go to 220 sandpaper, then 320 sandpaper, dye and burnish. Then after the holster is formed (molded) I check the edges again and if needed I touch up with 600 grit sandpaper, redye and burnish again. This makes for some pretty hard edges and makes them very slick. I also then finish the edges with beeswax. My .02
Again, Good Job on your first complete holster. I am pretty certain mine was no where near anything as accomplished as that.