It is harder to explain in type, but if you are only talking about the arrow holding part, it is basically a tube...pretty easy to make. If you want to add pockets, etc...a design is helpful, but for this type of quiver, a rectanglular piece of leather, a bit longer than your arrows maybe 18's wide folded and stitched to make a tube is basically it (overlap the side and punch holes, stitch with leather lace, hole every inch or so)...cut a hole to retrieve arrows, add bottom, attach strap in right place (this is hardest/most important part...look at pics, that is about right ).
You'll need 8oz+ leather for this type of project. I've made a bunch.
hidehandler.com was really the first like this...others have followed...Jack somebody has a simialr type which is a bit easier top make.
I've made a bunch like this...I can take some pics maybe later this eve...feel free to question away.