I like the colour you chose and the hint of vignette. This garnered a 4 from me, which was quite generous considering the lack of focus. The comments below are a good indication that something was not right with this photograph. If the blur was intentional, it may have been wiser to exaggerate it. As it is now, it just looks like you couldn't keep the camera steady :(
A little too fuzzy for me and the composition is lacking some oomph. (One of the petals is cropped at the top, either crop the flower to aid the composition or include it in total.)
Your composition is quite nice, but it is just too blurry and noisy to have a great impact. You either need a tripod, or just to adjust the focus so that the center is sharp. For noise reduction, I like Neat Image, which is free. Sorry if you already know that. Oh and, that little dark spot near the bottom of the flower is really distracting too, not to browbeat you or anything ;-)
I'm not sure if this is the look you were going for, but the flower seems to be mostly out of focus. I think this could have benefited from a lower aperture, increasing the depth of field on the image. I think otherwise, it is a really nice shot. I like the lighting especially.