A speed portrait I did of artist Anna Schuleit, a artist in New York who paints some nice abstract paintings. Her website is http://annaschuleit.wordpress.com/
I had some issues with the teeth but I think they came out decent.
Time Spent 1 hour
Created in Artrage
Reference photo on http://commons.wikimedia.org/wiki/File:Artist_Anna_Schuleit.jpg uploaded under the CC-SA license by the artist herself.