I have been a victim of having a great image and the background destroying the aesthetics of the image. I oblige you whenever you are shooting to pay as much attention to your background as you do to our subject.
The few things that capture the attention of the viewer are basically the subject and background. This does not really apply to portraits or modeling shots but it does with other types of photography, especially when shooting landscape, documentary, street, etc. Pay equal attention to your subject and your background, or else you might miss details in the surroundings that can ruin your composition. Just look at the photo below.
Do you notice the pole in the background, just behind the head of the subject? Once you notice that, it will get on your nerves because it shouldn’t be there in the composition.
Here are few things to do to focus on your background:
Pay close attention to the background: Trying to frame your subject and applying all the rules of composition can make you forget every possible element in the background. You might not know how important this is but over time the background becomes disturbing.