Huns, what you do is amazing! Might I ask how do you fix the zipper in place when you hand stitch it, so that when you're done the zipper does not go in waves?
the stitches look different, where the leather is glued in some layers, the thread dives in them, so to say.. I also attached the photo of my thread)
i use japanese tools, size - 5mm, also attached for you to see)
Actually I do not know precisely... the seller told it had been veg-tan. ) I use the edge beveler, then water based tragacanth and then the edge dye also water based. and thank you)