After figuring out the first method
, I decided to try a slightly different approach; here are the instructions.
In this method, you start wrapping the feather close to point on the shaft where the fluffy part of the feather is, wrap wire up to the end of the shaft, form the hanging loop, and then wrap a little bit of wire back down the shaft to secure the end of the loop.
I prefer the first method. It seems simpler and I liked the appearance of the wrapping better.