When photography first appeared it was in response to the desirable art of the portrait. In this way, art & photography have always been linked. Just as beauty is in the eye of the beholder, art & photography are also subjective. However, there are some general techniques that can help you capture that special moment.
The eyes are the windows to the sole and in art & photography they play an important role. Much of a picture's power is in the eyes when it comes to the portrait picture. For this reason, it is best to be eye level with the subject. It does not necessarily mean that your subject must look directly at the camera, but it is best to be eye level.
Less is more. In a picture you want to highlight the subject of the art & photography. If you have a lot of busyness in the background you draw the eye away from the subject and it no longer remains the focus. To prevent this, you need to keep the background simple. However, when taking pictures out doors, you don't have the luxury of a manufactured back drop. This requires you to find a natural one which may be some bushes creating a solid green background.
When taking pictures out doors, you should probably use your flash. This is especially true on sunny days as the sun can create unpleasant shadows in your picture. On an overcast day, you should try taking on of each as the overcast can sometimes give your art & photography a pleasant subtleness.
One way to get the best from your picture is to move in on the subject. Really make sure you get up close and personal. Another way to add some character to your pictures is to move the subject away from the center. You will be surprised at the effect that this simple step can give you.