mallard feather wings?

I was tying up some Coachmen last night, and I got completely mungled up
trying to prepare and tie on the wings. Some questions;

1) Any inside hints on how to prepare a matching pair of sections? I found
it very difficult to get them really the same, either the length was out,
the width, the color, or the curve. Which is most important?

2) How can you keep the wings from splitting as you tie them on?

and mostly

3) How do you tie them on??? I kept getting one wing bending over the other,
or splitting horrendously, or both of them ending up on one side of the eye.
Just doing a soft loop didn't seem to get them lined up exactly how I wanted
them...there's gotta be an easier way!

--riverman