I've wanted to make this tutorial ever since I posted my Easy peasy snap wallets, and that was a gazzillion years ago.. I'm just now getting around to it! I'm demonstrating on my sister's new princess wallet since she got the first one I made her FILTHY and gross. This isn't a standard way of setting snaps, but its the way I taught myself after trial and error, and its way cheaper than buying a fancy tool. All you need is a hammer!
FYI - There are FOUR parts to a snap, I don't know what they are called, so just go by the pictures to see what part I'm talking about in each step =)
Put the top part of the snap where you want it. Flip over the fabric and press the prongs through. I use a retracted pen to push down the layers of fabric, it works really well.
Line up the next piece on top of the prongs, it'll kinda fit into place easily and won't slide around.
HAMMER! 5 or 6 hammers will do if you're a wimp like me who doesn't know how to hold a hammer..
Fold over the flap and use your pen (or just eyeball it if you're a smarty pants) where the snap should be.
Slide the pronged part under and line it up with the dot, push the prongs through again.
Line up the next piece on top of the prongs.
DO NOT HAMMER THIS!!!!! It will flatten the knob and make your snap NOT snap closed.
Instead, close the snap, very carefully since the bottom two pieces aren't hammered down yet, and carefully flip it over.
Hammer the back of the fabric on top of the snap several times. (fewer times if you aren't a wuss)
And you're done!!