Photography Technique - Choose Your Background Carefully
A lot of times, people take pictures without noticing what's in the background of the scene they're photographing. An easy way to improve your pictures is to take care when composing your photos and observe what's going to be in the background of your pictures. A good general rule of thumb is that simple backgrounds are better. Watch out for busy bacgrounds that can make your pictures look cluttered.
Also, check out this related tip: Avoid Mergers