Interesting. Very interesting.. lol well for the C&C: Doesn't look bad, but I don't like those lines that much :/ Maybe use the pen tool? It looks much nicer . Wonderful colors, and I like what you did with those lips . Good job, 8/10 (considering "I haven't made a sig in a while... so yeah. "). Say.. I haven't battled you have I? Hm..
Mmmmmmnnnn YUM! So simple, but crisp and sophisticated... LURRRRVELY KIABIN Something I think that would benefit the signature is maybe removing/rubbing away the cool blue filter on certain sections of the focal, make it a bit warmer in certain parts. I'm not sure why.... but I think it would help out a little with the overall composition, defining the curves and shape of her face and more specifically her cheekbones.
Now that I see that, I do agree. It's a bit too bland ^_^. And now that I see it, I didn't use any extra contrast layers. Those seem to be needed.