Method of drawing metallic effects in Adobe Photoshop

How do I represent the metal on the picture? Nobody found till now the best way of representing the metal surfaces. I suggest you one of the ways. I work in the Adobe Photoshop CS.

Because picturing only the metal is a boring thing, I'll try to represent it on the soldier's armor. The first step includes outlining the picture. Do it on a new layer. I've tried to represent also the character's silhouette and his face.