Thanks for the input. It's a bad quality image anyway. Im not sure how to get a good pic of the models. It is actually highlighted in 4different shades of gold and given a final highlight of silver in areas to pic up significant detail. I will take your input of the skull and try and re-post a better image once i add more detail and get a better pic.
To much of one color here, possibly pic out the details in a different color of gold, or with a brown ink wash. The skul on his weapon appears to be a solid white, with some light blue. Perhaps paintit bone first then innk it with chesnut then re-highlight with bone with a little with a litte white.