Before you begin drawing on a surface, think first about how you will place everything on the picture plane . The picture plane is the illusionary flat surface on which you create a drawing or painting .
When a viewer looks at a work of art, the first place their eye goes is to the center of the picture. If your main emphasis is in the middle, there is little reason for the viewer to look at the rest of the piece.
By placing the emphasis in one of the side boxes, the viewer’s eye movement is stopped. In order for a viewer to see all of the work you put into a drawing or painting, you need to keep their eye moving.