Figure vs Ground is an art study attempt at having no negative space. Every part of the image is occupied by a subject.
This is a hand drawn image of a gourd. It is a still-life drawing with some corn in the background.
Closure is an art study of colors and circles. Every line is part of a circle. It is a colorful abstract drawing.
Pumpkins is a charcoal still-life by Jeffery Prescott.