I've had my own Black Swan costume on the back burner for several months now, and while I am working on a version to sell in my etsy shop, I thought that it would be a good idea to tinker with the tiara and bun topper. After playing around with different types of clay, I finally found one that I was comfortable with. So then I just did a couple of trial-and-error runs, shaping wire bases to see which one I like the best, then forming the clay over the bases (I am no clay expert, but it is fun!).
After it dries, I filled in any problem areas with more clay and let it dry. When it started to look the way I wanted, I was finally able to paint it, first with metallic pewter spray, then highlights by hand with acrylic in black, silver and graphite. It's hard to see the highlights in the pictures.
My favorite part...the rhinestones! I found some vintage Czech glass rhinestones on ebay, the only problem was, it's virtually impossible to find settings to fit them. Oh, well, I was still able to attach them to the tiara no problems.
The posting: http://www.etsy.com/listing/91765039/black-swan-tiaramade-to-order