Do you want to learn how to free hand them or do you want to try making your own templates??? i made my own template out of an old sterilite container lid. I measure how big i wanted them and i cut them out with an exacto knife i can show you a pic of one of them. Then i just use these instrucitions. here is pic of one of mine using the template i made.
Here is the video i use http://www.youtube.com/watch?v=uYm3z6xWY8I