I'm making a small vignette of a 1/144 Learjet flying very high over the sea at night. My idea would be to have a base of a picture of the sea, with a layer of patchy cloud a couple of centimetres above it, then the plane mounted on a clear plastic rod about 5 cm above that. The scene will have a backdrop of the night sky on two sides, so this will provide some support for the cloud layer.
So my question is this - How to make a thin layer of patchy cloud that is rigid, but looks sort of realistic?
I was thinking about using furniture stuffing for the clouds and soak them in something to make them rigid. If so, what would I use?
An alternative would be to make a thin, but very rigid, frame and attach the furniture stuffing to that. I could then mount the frame on the background. If I go for this option, what ideas do [people have for the best material and construction technique for making a frame that wouldn't sag?
Thanks