Art subjects are everywhere. The artist evaluates, discriminates, chooses, and translates what she sees onto a rectangle of canvas. When we interpret, we can change perspective. We can enhance: add color, decorate; or simplify: remove detail, strip color…
When you look at art, you are seeing the result of hundreds, or thousands of small choices made by the artist to come up with what you see. At different stages, the artist may have loved/hated the way the piece was progressing.