Critique Request!! : Face Study

Hello!

This is my first time on this website, and I've read a couple of the tutorials and I'm going to go through those starting today. However, it's not my first time drawing so I wanted to know what I've been doing right or wrong all this time!

Here is the link to the drawing: http://journeybunnyart.tumblr.com/post/111024716575/ruriko-original-character-face-study

I did this drawing recently, but I wanted to draw this character again sometime and I'd like some tips on bringing her to life.

I would love to know what kind of personality you think she has based on how I drew her, and what I could change to make her face more readable. And also, any technical/ anatomical things I need to change.

Thank you so much!