What is negative space?
When composing a piece of artwork, we generally work with three elements: the frame, the positive space, and the negative space (also called white space). The frame is the bounding size of the artwork, the positive space is the subject, and the negative space is the empty space around the subject.
Negative space helps define a subject, so subjectively speaking, negative space works when there’s a balance between the positive and negative spaces. Negative space also works when it draws the viewer’s eye into the subject at hand.