For the metal you need to have a darker diffuse, like below 50 on the RGB scale, including the gold. Metal is defined by the spec and gloss, with little to no detail in the diffuse by itself. More scratches and tarnish in the spec will really help sell the metal look as well. Here is a quick and dirty mock up to show you…
OK, so I fixed the super strong translucency and the seam in the hair. BARDLER : Would love to hear what you think about the metal from the texture flats. What I was going for when texturing the white metal is making the spec for a regular metal surface but whit a dark white in the diffuse.
BARDLER : That helped a lot thanks! Here's the new maps and what the metal looks like now. I also darked a little the gold and white metal in the diffuse. Snader : I fixed the hairline. I didn't make it took zigzaggy as it looked weird to me but it's not straight anymore. Thanks for the tips, it looks more natural now.