I saw in the post by @laird that you used a ball chain to hold it around your neck. Where did you get that? It looks great with the rest of the design and much better than my simple bobby pin. Can you buy it cut to length or do you need to do that yourself?
Any craft store will sell ball chains. They even have them in different colors.
Yes, what @geek2nurse said. I had a promotional dog tag that got mine from.
I did realize a design flaw. You have to take the chain out to switch the design out.
Good luck on getting some referrals.