I usually resist posting other crafts on here but I think this is so great I just had to show you: http://www.craftster.org/forum/index.php?topic=131841.0
Scroll down to the end of the first post. She provides a tutorial link at the start of the post.
I just made my own version for a Nano (after three practice tries on three books that I wasn’t happy with). If anyone plans to make one too, reply to let me know and I’ll post the things I wish I’d known before starting.