What material specifically are you using for the poly wing?
The reason I ask is this, it looks like a "softer" type poly yarn of some kind that will eventually become waterlogued and sink your fly. I like a "stiffer" more "crinkely" type of material for wings like this.
It could just be the way it looks in the pic, if it is just tell me to shut up.
Just thought I would mention it before you tied a bunch more, I've been there and done that before.