I just started getting schooled in the ways of texturing by AlphasoniK today (and a great teacher he is), and thought I'd post the outcome of his guidance here. This took me roughly an hour to make (which is probably longer than necessary).
Not bad, its a bit basic though. What i dont liek is how youve basicly just pentooled a shape and put a gradient in it, Try creating your own tone dont be afraid to use very dark colours and vivid whites trust me the more black and white the better.