Make use of the instant feedback you get from a digital camera. The screen on your digital camera can show you the basics of how your photo came out the instant you snap the shot. Learn from your mistakes and take another shot, there's no need to wait for your prints anymore.
A great photography tip is to make sure your shots have depth in them. An easy way to achieve that is to be sure that you have a background, a middle ground, and a foreground. Having all three of these will give your pictures a sense of atmospheric perspective.
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.