its a wonderful job of stamping and appears to fit well. i really like the way you stamped the camo turnaround by the trigger that is a hard spot to fill and make look good. i would suggest a more finished strap to match the holster somehow, maybe to match the lower strap, it looks out of place and as bladegrinder says a bit to long after the snap. My two cents on a strap, it is dependent on the type of holster you make and the intent of usage for it. I do however feel most holsters need a strap of some sort. you can put a thumb break on that style by adding a dog ear at the top back by the fold of the loop with the male snap then sew your strap on the front of the holster or design it into the pattern.
i meant female snap.