In general, the first one would be my pick of the set. I like the overall "mood" being conveyed in the eyes and mouth. However, I am not really a fan of the twigs covering parts of her lower lip and eye. But that's just me.
It took me a minute to figure out what is going on with the lower lash/eye lid on her right eye in #5. I finally came to the conclusion that it must be a stray hair.
