Think about an egg. What would you change in its shape? Yes, it is formed to a completion. We might want to change the outside or the inside. In decorating shapes are important factors to balance the insides and outsides of our environment. In nature we see a tremendous amount of different shapes. So making an interesting interior has a lot to do about balancing the shapes together. An empty room is usually shaped a square. When you start decorating the room start adding different shapes to harmonize the square. In a good energy flow of a room you find squares, rounds, waves, pillars and triangles.