Melanie, lovely shop! However.... there are 163,000 "flower headbands" on Etsy today, so it's difficult to get found, especially when many shops have been around for several years and built up a customer following. There's sure to be less competition if you are hoping to sell locally, however if you want to sell to the U.S. market(only because it is so large) my suggestion is to create something unique...maybe matching girl-and-doll headbands? Mommy-and-me? (Also definitely put "wedding" and "flower girl" in your tags.)
I say this because the market I had planned to sell in (childrens-wear) is also over-saturated, so I've had to branch out...in my case to plus sizes, sleepwear, and doll clothes. It's so much easier if you are in a less crowded area.