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Artnatomy/artnatomia: Anatomical Facial Expression Learning Tool
A magnificent Flash interactive tool useful for teaching and learning about the anatomical foundation of facial expression. Expandable animated images overlay each other to show both the structure of the skull and the muscles employed...
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National Portrait Gallery: Face It!
This UK site gives us insight into how symbols and colors are used in a portrait to represent certain ideas. You can even take each portrait and have it shown in line drawing - print it out and color it your own way.