Use a good glue (I love The Best Glue Ever)and gems. Apply them with Embellie Gellie--it will takes seconds to place them exactly where you want them! This weekend on a card, I used Embellie Gellie on the Best Glue Ever to adhere those teensy tiny gems that are made for fingernail art (a whole bunch for $1 at The Dollar Tree). It was AMAZING!!!
Here's a demo of Embellie Gellie from Taylored Expressions(BEFORE she started using The Best Glue Ever, though) http://www.youtube.com/watch?v=j9nd5OhDVis
Here's a birthday card from start to finish using The Best Glue Ever, Embellie Gellie, StazOn, glitter, The Perfect Printing Pouch, Scor-it-all and lots more tools too: