Carol facial concepts

Since May of 2011, I gave birth to a character I could call my own. Her name is Caroline, and I named her after a girl whom I developed a crush on during my Freshman year of college.
Over the past two years she has slowly been recognized by my friends and associates and appreciated by the community.

Here I have a collaboration of all of the facial shots of Caroline. from the beginning to the most recent shot. Which facial expression do you like the best?