To avoid red eyes in your photographs, make sure that your camera either has built in red eye reduction or you change the direction of your flash. If you did shoot a photo and it contains red eyes, you can easily remove them through the use of a graphics software such as Corel or Photoshop.
Incorporate things like roads, streams, shorelines, railway lines, or even railings, into your images. These are referred to as lead lines and are a great way to capture the way that a viewer is going to look at your photo. They will lead your viewer's eyes through the scenes of your photos.
When aiming for the perfect shot, remember to keep sunlight in mind. Too little and you can't see the subject. Too much and one of two things happen. The first is that too much sunlight is directed into the camera's lens or on the subject and washes out the picture. The second is the person being photographed has to blink or close his eyes because of the massive amounts of sunlight coming into his eyes.
A typical evening at the photolab.