Very nice! It looks just like her!
You drew Keira's cheekbones nicely, I know alot of people tend to ignore how inset that space below her cheekbones is.
Maybe her forehead is a bit longer (but what do I know).
Also, I would say you need to make the dark values as dark as you can.
Though, I shouldn't say that, because it's something that I have great difficulty with. :D