Sight lines and action should run into a photo rather than out of the shot. Shots with a flow of motion into the frame or diagonally across it work well. Especially at AFSC where photos are printed small. Lighting that sets your subject apart from the background is useful. U.S. Shooting from subjects' eye-level.
Many people take virtually all of their photos from their eye level.
It is usually more effective to shoot from the level of your subject. When you are photographing children, that means sitting or kneeling. Shooting quickly There are several ways to shoot pictures more quickly, and thus less obtrusively. Practice with your camera is the most important one. As you become more familiar with the controls, their use becomes more automatic.