Well I have finished my contribution to Joy's NYB quilt. The inner arcs were taken from the wedding quilt and the extra arc was designed to extend the circle from a 9in to a 13.5in circle. Should be interesting to see what fabrics Joy uses.
One thing that did surprise me was the number of foundation paper sheets that were needed...24. That has to be the most that I have needed in such a small area. Although with the wedding quilt I did need two per block minimum which makes108 for the central blocks and I'm still working on the borders. :-)