Ambiguous Figure Ground Composition

FIGURE : An image that appears to be somewhat closer to the viewer than the background; also called positive shape. 

GROUND : The area that appears to be farthest from the viewer; also called "background" or "field."
FIGURE-GROUND REVERSAL : A composition in which it is difficult to tell what is figure and what is background; also called "figure-ground ambiguity."

So the goal of this job is that make ambiguous what is FIGURE and what is GROUND

To create figure-ground reversal effect the portion should be about 50/50 percent and used similar shape.
If I take a photo aiming at the same effect, it will be like,

something like that?

If there is different shape used

it will stand out. If there is closed figure used

It will stand out as well.(guess what where is closed figure?)

For the job, figure-ground ambiguity, I should avoid to use different shape or closed figure, however, at the same time, this is the way how we get attention.

When we take photo we want our object to stand out as a closed figure. That is why we should see negative space when we take photo because that can be the reason for an object lose its quality as a closed figure.