I did post a tutorial on making Sami knife. But lately I was asked a lot of questions about making leather part of the sheath. Luckily enough I'm making one right now and here is how I do it. First of all make an antler or wooden part. "Ribs" don't need to be very high. Just a couple of mm. Than I make a paper mock-up leaving about 25 mm (1 inch) for the seam. Transfer it to the leather and cut it out. I'm going to make a "folded" top, so I leave about 30 mm extra on the top. At this step it's very important to make a nice straight cut at the top and bottom of this piece of leather. This is what it looks like after I mark where to thin and taper. Bottom part needs to be tapered a bit, sides need to thinned a bit, and the top need to be tapered to almost 0. I start with this tool and try to get as even surface as I can. But it's never even... I finish with 80 grit sandpaper on a block of wood. Here is bottom side ready. And top is ready too. Then I get antler part ready for sewing. Leather will be dyed and I don't want the dye to leave stains on my antler... Front. Back.