The rule of thirds is a "rule of thumb" or guideline which applies to the process of composing visual images such as designs, films, paintings, and photographs.The rule of thirds is a concept in video and film production in which the frame is divided into into nine imaginary sections, as illustrated on the right. This creates reference points which act as guides for framing the image. ... In this shot, the eyes are placed approximately 1/3 of the way down the frame.The guideline proposes that an image should be imagined as divided into nine equal parts by two equally spaced horizontal lines and two equally spaced vertical lines, and that important compositional elements should be placed along these lines or their intersections.Proponents of the technique claim that aligning a subject with these points creates more tension, energy and interest in the composition than simply centering the subject.
Examples:
Best image
Worst image
I think this is my best image because it is very clear and it is taken from a good angle also the exposure is correct and the background makes the image stand out more.
I think this is my worst image because it is a bit blurry and it is taken from the wrong angle which makes the image not look good. Also the exposure doesn't look very good.