Parkland art gallery!

I've attached a picture of drawing, author is WATT, ATTHEW D.

From this picture, you can see the symmetrical balance. The little smaller leaf on the left adds the snake can balance the large leaf on the right.The white leafs contrast with black leafs. One dog in the middle laps up the leaf at the right bottom, and the tail touches the little up leaf on the left. The whole picture uses just black ,gray and white color, but the value contrast can see the different lay of the image. The repeat curve lines create the rhythm in the picture.