I am working on a costume right now wherein I need to make leather (faux leather would also be acceptable) earcups for a pilot's helmet. Think along the lines of a WWII pilot's helmet like this
but the earcups would only need to be in the shape of essentially a pie pan. I have read on the web that one needs to soak leather and then stretch it over a form to shape it. How could I achieve this? I mean I could buy two small pie pans and attempt to stretch the leather over one while pressing it inside the other but I am not sure how well that would work. If I could get the same effect with fake leather or vinyl that would be just as good the material isn't really of any consequence.