Beautiful shot, capturing the details in the petals' texture. Good amount of shadow to bring depth to the image. However, it makes me feel sad, like this bloom was meant for someone special that didn't show up.
I do like Roses and you did a fine job on this one, its nice and sharp with nice detail. Personally I think a darker background may look nicer but that is just my own preference.
I agree with Uncle Joe, a slightly darker background might be better, but the white background does seem to help with the fine detail in this image. Gorgeous flower and nice work Cindy.