you can try that if you like, burnish the edge will work nicely, if you do not have a burnishing tool or wheel, chamfer the outside edges at a slight angle, them get the edge wet, and you can use a dry lag bone thats been sanded from a chicken or deer or? and while the dge is damp, rub the snot out of it, quickly, this will compact the leather fibers and give it a nide uniform look, assuming that you trimmed all 3 layers of leather so their even.