flower

With the sun coming from the lower left corner, I find the image very overpowering and almost unsettling.

If it were mine, I'd try for some symmetry in the crop (top as much as bottom) and I'd lighten up the center of the flower somewhat using the lasso tool, feather selection and levels (in Photoshop, that is). If you're interested, I wouldn't mind sketching it out.

I'm just going to go ahead and show you what I mean... please tell me what you think: