Step #1 mark path of feather with chalk wheel.
Step #2 Following premarked line sew the first side of the feather from tip to base.
Step #3 Starting at the tip again, but using the first side of the feather instead of the chalk as a guide, sew the other side. It is important with this step, because of the tight curve, to be sure to make an extra long "stem" on each plume of the feather. Also none of my feathers have spines. This avoids a "messy" looking center vein where all the plumes of the feather meet unevenly - with my method they simply don't meet. After adding the branches to the feather it was completed after I echo quilted it entirely. It turned out smashing!