I used some zara merino wool I had left over from a scarf I finished crocheting to make this:http://img.photobucket.com/albums/v21/pbizwack/greenflower.jpg
Row 1: K8
Row 2: P8
Row 3: K2, CB4, K2
Row 4: P8
Repeat 1-4 until desired length around neck
Cast Off, (get your crochet hook) sc in next two spaces, c2, sk 1 sp, sc in next two spaces, and tie off.
Sew a button on opposite end ( I used a small pearl button)... and voila!
Find any flower to crochet and sew on so that when you put on the choker, it'll be to the side. I got snazzy and tacked on a star stud. Enjoy!