Here's the recent image I did for Popular Science magazine. I learnt a lot during the process of this one, like taking an image too far in one direction before showing the client. Regardless, I really like how the alternate piece came out, we ended up using this instead of a scene, sometimes simple works best.
Here's are some close up shots of the metal. Also here's a good tutorial on how to think about painting metal and it's attributes (tip 15 - Reflective Metal the easy way).