There were a couple of documentaries on last night, and so I saw a lot of pictures of the different styles of Cybermen. They changed, a lot, over the years, but the heads have a lot of design features in common. The ear-loops are a mix of straight sections and fairly abrupt bends. The eyes are round. And there's a sort of headlamp/third-eye thing on top of the head. You see it today on some fire-fighting gear, a breathing set with a IR camera in the helmet. The mouth varies a lot over the years, but it doesn't look right taking up the full width of the face. Of course, a Poser Cyberman would have grotequely over-sized chest-boxes...