In 1994, I took a drawing class in the local community where I was living at the time. One of the best exercises we did was drawing upside-down.  It helps to release your focus on the subject and just concentrate on the space, lines, and form.  Here are my two attempts with the technique. As in most drawing class, we kept a daily sketch journal for practice and inspiration. Here are a couple of my favorite drawings from my sketch pad.

Left Hand

Small Drawing

Geni

Small Upside Down Drawing

Drawing

Small Upside Down Drawing

Drawing

Teddy Bear