I doodled the top right in class yesterday, and did two more today because I decided I like how they look! The top right is just a random person that might be me... The bottom right is Ember (her final character design that I finally am able to draw) and the middle left is Claudia! I've never drawn her before, but everytime I look at this drawing, I just see River Song.

I still like it though!
Drawn on 3x5 notecards with a 0.5 mm #2 mechanical pencil and a black marker.
I draw during school too
She doesn't look like River to me.