Unlike some things, there are no restrictions in art. You're free to do whatever you want creatively so long as you can imagine it. Art comes in many forms though something could also subjectively be art. Art is black and white. Art is color. Art can be beautiful. Art can move. Art can shape. Art IS shape. Art is motion. Art is emotion. Art is style. And most importantly, you can tell a lot about what goes on in a person's subconscious mind by seeing how they express themselves artistically. And that's what I like about art.