I occasionally up cycle toy Dr Who Cyberman helmets, this is one I finished yesterday. After rubbing the whole thing down with fine grade steel wool and removing some of the inner workings so that they wouldn't get spray painted, I added rivets and nuts.
Next it was sprayed with acrylic primer which was followed by a coat of acrylic matt black paint. The spray painting was finished with a coat of metallic copper paint. Then it was finished by hand by brush painting verdigris on selected areas.