Songbird - original charcoal portrait sketch

I finished this sketch in the allotted time - I think it was 15 minutes - I should have gotten much farther along, but oh well.  If I noodle with it now, it will be ruined, for sure.  The model did a little singing for us and she was really good.  I like knowing more about the models and am so happy when they tell us what they do in their daily lives.  Helps make more of a connection between artist and model.  This charcoal drawing is on Strathmore 12 x 9" pastel 403 paper.  Thanks for looking!