Fourth grade did a large portrait unit that included shrinky-dink self-portrait pins, bobble head caricatures (which I'll post) and artist portraits. They selected an artist whose work they really liked and after learning some sketching/proportion basics, created some really awesome portraits! Their task for their backgrounds was to represent their artist's style in some way.
Jasper Johns
Janet Fish
Vincent Van Gogh
Chuck Close
Frida Kahlo
Wayne Thiebaud