Ed,
That would be like many of the Clyde style patterns, Where the wing is made from the tip of the hackle feather. Not sure how it would look on one of these as the hackle should be "palmered" over the front 1/3rd. That would push the wing back quite a way. You could tie the feather in the opposite way around and use the head to turn the tip back to form a wing after winding it.

I'm afraid I know very little about the Clyde patterns. Donald is your man for that kind of fly.

Cheers,
A.