I guess some industrial strength scissors would be in order?
I suppose it would depend on how heavy the leather you're working with is. I used my little fabric-only sewing snips and they were just fine. (a little $9 from Michael's is all they are).
tutorial please, oh please...
sure. The flourish/image I used came from maehem's wists, a necklace she liked. I roughly sketched the shape on a speedball printing block and carved a stamp. I used this to stamp the image (using fabric paint) on the reverse side of the leather. I let it dry, then cut the pieces out. I changed some of them to keep it interesting (and added bats for maehem!). I took a nail and a hammer and punched holes in the cut-out pieces where I planned to link them together, and wherever I thought it might be fun to add a dangle or accent or something. Then I treated first the fronts, then the backs of the leather pieces with resin: I mixed up some resin and used a paintbrush to paint it on. I let the pieces dry overnight, then mixed some more resin, got a new paintbrush, and brushed the other side.
I had to punch the holes again after the resin-painting, so I did that using a sharp bit of wire. Then I simply started hooking everything together (actually, this was the hardest part), adding dangles and accents in the extra holes.
That's pretty much it. Hope it makes sense. I did a test run before I made this necklace, using some heavy-weight top-grain upholstery leather I had salvaged. What I noticed was that the thicker leather was able to absorb more resin and become stiffer overall, so if you want it lighter weight and more like vinyl, use a lightweight leather. I think I will attempt to make some silver wire bullion and turn my practice piece into a pendant or something. I'll let you know how it turns out!