I consider art a subjective subject. Getting two people who will agree as to what is good art or bad art is nearly impossible, we each see the matter at hand in a different light. Whether it be two or three dimensional. art generally comes from deep within the artist subconscious, many times an artist starts out with one vision in mind and before completion that vision has been completely transformed into a new entity.
"Art is the progression of materials united with thought, design and form until it becomes exactly like the artist themselves. To invoke emotion from the viewer is the ultimate goal of any work of art." David Harris