Using a shallow depth of field can sometimes make all the difference in the world between mediocrity and magnificent. Well, okay, that might be a little extreme. But in this shot, I used an f-stop of 2.8 and as a result the various depths of the flower have great separation by way of clarity. This allows for what I call a floating effect. The background is also blurred in degrees, giving you enough information and added interest without distracting your attention from the main focal point.
Your turn. Get out there and take some shots with a shallow depth of field. Choose your subject accordingly and have fun!