Tricky. One of my very first attempts was at a nearly crystal clear wing (link is here). Admittedly, its a little different from what you're looking for, but it's something that maybe gets you started in the right direction. I think the important part for you would be the back of the figure, where I've had to paint, on the wings, what is in front of them. So, mix that with the translucent articles and I think you'd be well off.@ Einion: I'm trying to paint a wing.