Do You know about the Dresden Challenge?

I'm working on a double-pointed rainbow dresden on black--have 40 sets of 5 blades sewed, 4 of them already appliqued to background and sewed together--see pic--and another set of 4 pinned to background ready to applique.  Not sure how many full circles, how many half circles (quilt sides, top and bottom) but I know I need 4 1/4 circles for the corners, LOL!
Here's link for the Challenge:

http://www.slmqg.com/ez-dresden-challenge/