Pretty, huh? (Not me, the necklace, you sillies!)
Anywho, here's what you need to make it:
Lace ribbon (or regular ribbon. It's your necklace and, therefore, your call.)
A clasp. (I cut mine from an old bra, but you can use something else, or just cut your ribbon long enough to tie it in the back.)
Needle and thread, or good fabric glue
Old necklace, bracelet or pendant to put on your choker
A neck (tee hee)
OK, first, you'll need to take your measuring tape and measure snugly around your neck. Your ribbon needs to be this length with the clasps attached to its ends. Before I cut my ribbon, I folded over a bit of the already cut end and pinned my one of my clasps to it. Then, I measured out the length of my neck measurement and cut. Then I folded my newly cut end a little bit and pinned my other clasp to it, making sure the end length still matched my neck measurement.