My Sony takes excellent macro shots, but for general garden and flower close ups if you're taking photos from say 1-2 feet away I'd say stand still (most cameras have some kind of anti-shake feature) and get yourself more on a level with the plants. Don't stand up tall and point your camera down, hunch down or use your camera's tilt screen if it has one. Also let the lens focus properly, it can make all the difference if you wait until the focus is set on the plant rather than quickly pressing the shutter. This also helps avoid having the subject blurred and the camera focusing on the soil :)
