Thanks for the nice comments everyone.
mljdeckard, this is the fourth sheath I have made. The others were for a drop point hunter kit knife, one for an old Buck 105 Pathfinder for a coworker, and one for an old Schrade skinner for yet another coworker. What I'm getting at is that I've done a couple of very different blade styles, but have had pretty good results, even considering my very amateur level of experience. I think this one is my best so far. A lot of it is trial and error, but if you're at all crafty, I'd say give it a shot on your Mk II (BTW, another knife that has always been on my list of wants). There are plenty of videos on YT about leatherworking. If you have a Tandy nearby the folks there are usually helpful, and they have a million tutorial videos on their website.