Here is some Quick tips for improve your skill
Selecting background
Selecting background
A plain background shows off the subject you are photographing. When you look through the camera display, force yourself to study the area surrounding your subject. Make sure no poles grow from the head of your favorite niece and that no cars seem to dangle from her ears.
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Use flash outdoors
Bright sun can create deep facial shadows. Eliminate the shadows by using your flash to lighten the face. When taking people pictures on sunny days, turn your flash on. You may have a choice of fill-flash mode or full-flash mode. With a digital camera, use the picture display panel to review the results.
On cloudy days, choose a appropriate flash mode. The flash will brighten up people's faces and make them stand out. Also take a picture without the flash, because the soft light of overcast days sometimes gives quite pleasing results by itself.
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Move it from the middle / Use Rule of third
Center-stage is a great place for a performer to be. However, the middle of your picture is not the best place for your subject. Bring your picture to life by simply moving your subject away from the middle of your picture. Start by playing tick-tack-toe with subject position. Imagine a tick-tack-toe grid in your viewfinder. Now place your important subject at one of the intersections of lines.
Rule of third is actually about how to position your subject in the picture. Actually it's not even a rule, it's rather a guideline for making reasonably framed pictures.
You'll need to lock the focus (by clicking the sutter half-way, see next tricks) then move your camera a little bit left or right.
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Lock the focus
You'll need to first lock the focus with the subject in the middle and then recompose the picture so the subject is away from the middle.
Usually you can lock the focus in three steps. First, center the subject and press and hold the shutter button halfway down. Second, reposition your camera (while still holding the shutter button) so the subject is away from the center. And third, finish by pressing the shutter button all the way down to take the picture.
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Know your flash's range
The number one flash mistake is taking pictures beyond the flash's range. Pictures taken beyond the maximum flash range will be too dark. For many cameras, the maximum flash range is less than fifteen feet—about five steps away.
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Watch the light
The most important part of every picture is the light. It affects the appearance of everything you photograph. Don't like the light on your subject? Then move yourself or your subject. For landscapes, try to take pictures early or late in the day when the light is orangish and rakes across the land.
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Take some vertical pictures / Change your camera orientation
Is your camera vertically challenged? It is if you never turn it sideways to take a vertical picture. All sorts of things look better in a vertical picture.
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Hold still your camera
To avoid shake of camera in low light condition, use tripod or while pressing the shutter speed hold your breath for 2-3 secs(i do it all the times).
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