My notes:
Principle of Still-life Composition:
1. Something in perspective (recipe card) to lead the eye in to:
2. Separate shapes (spherical onions) which give rise (by their plant growth) to:
3. The main colored vertical (catsup bottle).
These objects form a pyramid from the near corners of the card, the edge of the outer onion, to the top of the bottle.
4. Color scheme:
a. Light in center
b. Main color in the vertical
c. Dark foreground and background