Excellent composition (I like it, anyway), good DOF, and good light to shoot this. The noise/grain - have you tried running it through a noise program like NeatImage? This would blur the background flowers and even out the noise, giving a smoother, more polished look. And for a flower in a FS, I'd say it did pretty well!
I liked this one. Loved how the one is in focus. The lighting and capture of details is excellent. I gave it a 6. I think I would have given it a higher score if the grain was not there in the background. Call me picky. :P Great score in the FS!