When capturing an image, get in close to the subject so they fill your viewfinder.
If there is one technique most digital camera users can use today to instantly improve their photos it is to stand at least two or three steps closer to their subject.
Most photographers stand too far away from their subjects so the subject ends up being very small relative to the rest of the photo.
When you move closer to your subject you make them larger in the viewfinder so they fill the photograph.
The result is not only a much more interesting photo but, because the subject fills the screen, there is less distracting background detail. If you can’t get physically closer to your subject use the zoom on your camera to zoom in closer.