I'm not familiar with the 550, but have a Fuji. First make sure it's on Macro (flower picture) after you turn it on. Second, press the shutter button down half way, if you see a red "AF" flash in the right corner, you are to close, back up or zoom out until it beeps, or disappears. Third, make sure you have plenty of light, there will be a white hand on the right side of the screen telling you if there isn't enough light to take the picture. Fourth, and most important, use a tripod or steady base to take the picture. On Macro, just a little hand shake translates into a mega quake on film. Good luck...