Basically they are large Dorset Buttons. I used Wooden Curtain Rings and Hand Dyed Silk Thread. Its the same principal, Wind thread around ring using button hole stitch.
Then create your cross threads. The start weaving under and over.
Here are some detail images.
The beading is added last.
I added beads to both sides so that when they hang and twirl there is little glitz showing at all times.
The beading is different on the other side.
I think the photos Lee has on her blog are better. Pop over to have a look.