Keith: look at the shadows on Lucy Liu and look at the shadows on the photo you took. Very different. The location of the light relative to the model and the lens is different. (That doesnt mean you didnt take a very nice picture, because you most certainly did. But in school, we are taught to pay meticulous attention to shadows and their characteristics to find out how something was lit: since I started doing that, I look at pictures more differently and it's really helping me learn stuff. So this is why I thought I'd mention it).

I like the dominant mid-grey tones of that image a lot.