This photo is famous because of the rule of thirds, which is a rule that most photographers use to judge where the subject of the photo should go. In this case the subject is the girl, and more importantly, her arm muscles. If you were to draw a grid on the picture, then her face and her arm are on the part of the grid where you want your subject to be. (on the side of the picture) This photo also has leading lines. Leading lines are whenever you have any type of lines that lead you to the subject, in this picture, her arms lead you to her face. A key to any great photo, is a strong subject, this picture for sure has a STRONG subject! It shows that women are strong, and that we are hardworking.