Does anyone have a pic of a stormtrooper helemet..

Does anyone have a pic of what a stormtrooper helmet mold looks like? The ear pieces are obvious but im interested in seeing what the face and back/top piece look like. Even a raw untrimmed pull from a mold would be nice. Im trying to scuplt a mini version trooper helmet for my son and want it to be as film accurate (except size) as possible. Any pics would be appreciated.