The rule of thirds is applied by aligning a subject with the guide lines and their intersection points, placing the horizon on the top or bottom line, or allowing linear features in the image to flow from section to section. The main reason for observing the rule of thirds is to discourage placement of the subject at the centre, or prevent a horizon from appearing to divide the picture in half.When photographing or filming people, it is common to line the body up with a vertical line, and having the person's eyes in line with a horizontal one. If filming a moving subject, the same pattern is often followed, with the majority of the extra room being in front of the person (the way they are moving).
With this photo I have made sure that there is enough nose room and head room available to make the rule of thirds work. With this picture you can see that the male is looking towards the left so I have made sure there is enough space from the left of the picture to his face to show clearly where the model is looking.
