The Rule of Thirds in imaging

     states major elements in your photograph should fall in one of the
     outside thirds of the photo, or on the intersecting point, when the photo is divided into 3 equal vertical sections and 3 equal horizontal sections.The rule of thirds is useful as a starting point when reviewing the composition
     of images and the visual balance of elements within that digital image.Use the rule of thirds to review your existing images and review your composition. You may be find out why slightly different versions of the same picture seem more pleasing to the eye than others.

    Online Examples of The Rule of Thirds