Hiya, i thought i would add my method, i use 2" plastick box tape clear or brown, then i put 2" double sided tape onto that (just the cheap stuff) and then stick the hole lot onto some card, overkill you may think.. but the card gives you something to hold you design onto pattern onto, when you have done and its totaly dry, peel the card/tape off the leather, not the leatherfrom the card, this as most will know will cause the leather to stretch, when you have done there is no glue on the leather, and no stretch, works for me,
Regards, Steve..