HI Beth,
Begin with the hole in your paper
Insert Eyelet from the front
Turn over and stick the tip of the eyelet setter, which is the thick pointy thing, into the back end of the eyelet...tap hard enough to begin to get it to spread out.
Remove the setter and take the round end of the hammer and tap it out the rest of the way, usually three or four more taps..then take the flat end of the hammer and just give it a tap or two to make sure it is all flat...
the softer your taps are the rounder your eyelet will stay!
Once you practice some you will find it is fast and easy and you will know how hard is too hard and how soft is too soft! Any more questions you just let me know! 