This spring I took Color Theory at Gage Academy, taught by Margaret Davidson. It was awesome. Here are three more of the drawings I did this quarter. Click through for large versions on Flickr.
Another shell. I'm not so happy about this drawing.

Click through for larger versions on Flickr.
A copy of a David Hockney drawing.
A depth study with chestnuts.
An in-between-classes drawing to make sure I could still move a pencil.