One of the most productive skill / technique that I learnt was how to create professional photos of our products at home. It is an easy and inexpensive way of getting great photos.
All you need to do is get a large box and cut holes in the top and the sides. Cover those holes with tracing paper to diffuse the light. Then put a piece of white paper in the back, tape at the top and leave loose to create a curve. Then all you need is a lamp and darken room, I was told that natural light is better but I found that a lamp gives just as good results.
It also depends on the settings on your camera or you do a little photoshop trickery.