Nothing much to this costume. I just cut up a black fleece blanket into the general shape of toothless wings. Then used a sowing machine to sow the ridges.
I was very lazy with the lights. I hot-glued some RGB LED strips to the wings, one on each side of the center ridge. Then wired the blue lights to a 9V battery plug. Then hot glued a Velcro cable tie to the back side of the wings to hold the 9V battery.