Drawing of a mouth - side view - draw a straight line to see the angle/slant nose to chin; also look for negative space to get the form of the mouth. So helpful because I want to learn how to draw faces from the side as well as I do from the front!
Hand painted tree rings - would recommend putting all tree rings on a board (which could be painted a coordinating color to add pop to the art piece. Really neat idea for after school kids. Might just do 9 rings in a square frame!