Hello! I've posted a nice blog on how I crafted Kuroyukihime's wings from Accel World - view it as a tutorial for ideas for similar wings you need to make, or view it just because
I wore this to Sakura Con 2013.
The posted is here:
http://liftedgeek.com/becos-blog/2013/4 ... rfly-wings
This is how I looked!
Hope you enjoy it!