How to observe differences in shapes, paying attention to details, how to measure and transfer critical dimensions, using horizontal, vertical, and angled lines to create reference points, how to properly use a grid reference system, when to eyeball locations vs. use the grid system, how to use negative shapes and positive shapes, appropriate scales for grid squares, aligning facial features on animals, sample animal photos you can use for drawing practice, select pages on How An Artist Sees from a Lee Griffiths book now in preparation.