In most portrait photos, the subject's eyes look directly into the camera. Have your subject express a variety of emotions to capture a unique photograph. You could also try to have the people in the picture look at something in the frame.
Focus on a single subject in your photographs. Pictures will work best with a single, clear point of focus. Setting up a composition that involves multiple subjects can be difficult and can result in a disorganized, cluttered frame. Having a single subject also makes setting your zoom and other settings easier.
Don't be afraid to experiment! With digital cameras, you can now store an incredible amount of photos. Try it out! Don't be afraid to set up your camera at a stream one day and play around with the effects to see what kind of photos you get. It can be a great way to learn what works, and what doesn't.