There are many elements in photography that come together to make an image considered “good”. Elements such as lighting, the rule of thirds, lines, shapes, texture, patterns and color work well together to add interest and a great deal of composition to photographs. Many of the best photos include just one interesting subject. So when you take a picture of one, spend some extra time preparing for the shot.
Some professional photographers say that the subject should not occupy the entire frame and that two-thirds of the photo should be negative spaces that help the subject to stand out even more. You can also download the Camera+ app and use its Clarity filter, which is what Kevin Sintumuang of The Wall Street Journal calls the app's secret sauce: it adds professional sharpness to almost any shot.