We went down to Santa Barbara with other members of the Brainstorms online community, and reproduced a stained glass artwork by Louis Comfort Tiffany called View of Oyster Bay. This proved to be a difficult artwork to render in pastel, particularly with the number of people we had working on it, but our work paid off beautifully.
 

David and Wayne add black as a final step

The completed artwork

Closeup of the upper right corner

Group portrait with our finished artwork