Tile stands, leaning back dramatically.
Tile illustrates the movable masses.
Tile moves into an inelegant handstand.
The head, the ribcage and pelvis.
Still somewhat leaned over, Tile moves to stand upright.
They are the 3 main masses of the body.
Tile, now wearing a wide-brimmed hat with a large feather, poses with one hand on hip, other hand to hat.
I learned that in Life Drawing.