In life, people are trained to always create things that are almost perfectly even. While symmetry and perfection are things people look for, try and take pictures of your subject off center. Beware of auto-focus features that lock in to whatever is in the center of the lens. Use manual focus instead, and lock your focus before snapping the picture.
One of the best ways for you to learn about photography is to study examples of how to hold your camera and work your subject during photo shoots. In addition, you can talk to someone who has been in photography for a long time to gain valuable insight on your craft.