One of the key ways to take great photographs is to take lots and lots of them, so buy a large memory card that can hold them all. By increasing the size of the memory card that you use in your camera, you are increasing the number of photos that you can take before changing cards. A large card will also allow you to use RAW format so you can take advantage of the additional flexibility it offers.
Take your pictures quickly. The longer you hesitate, the better the chance that your subject will move away, break their pose, or become tired and stop smiling. Start taking shots as quickly as you can, and don't worry about getting the camera perfect before the first shot. The faster you shoot and the more photos you take, the better your chances are of getting a good one.
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.
In this video I go through what negative space means in photography and how to use negative space. My review video about Live Composite images: …