Background clutter, distracts from the subjects (which I presume are the flowers). Could try going closer to fill up the frame with the flower (subject to minimum focusing distance of that lens), or find a cleaner background. =)
On elements that show repetition, it is to your advantage to illustrate the subject as a pattern. As such it would be a better choice to shoot from a top-down angle to show the flowers in a layered composition. It won't win any special C&C, but it'll be a much prettier image than what you have now.
I like this statement. It is easier to learn composition with less "busy" photos. Pick a subject, a simple one, and a clear background, and then try to make it look good. A photo need not be cluttered, filled with colour and objects edge to edge, to look good.
Sometimes minimalist just works better (let me know if you want these taken down) :