Good shot, but I'd change a couple of relatively minor things to make it really pop...
1. Increase contrast some
2. Crop differently so the flower isn't smack in the middle of the frame
3. Crop out or clone out the purple thing to the right of the flower.
4. I'd also like to see another version from a very low angle (like setting the camera on the street level). I think that would give this image a much different sense of scale and power.