When you view the images from other photographers, try to imagine where the light is coming from. Dissect the photograph and try to imagine what settings he or she used. Look for where the light is coming from, and whether or not artificial lighting was used, like a flash.
Try to picture where the light is coming from, and whether the photograph is composed well. In the case of a studio photograph, look at the eyes. Look for flash reflection and see what types of elements of lighting is used on the background, the angle of view, or possible post-processing techniques.
There are all kinds of elements that make you a better photographer if you can try to imagine how the photographer took that image. A lot of times with outdoor photography, it’s interesting to see where photographers place the subjects in relation to the natural lighting, whether or not they blur the background, things of that nature.
Just look at a picture and think where the subject is and try to view the picture from a technical aspect. You will find that doing this exercise will improve your photography a lot.