Lovely flower; I would have liked to see more color, though. IMO, de-sat works best with one deeply saturated color rather than more neutral ones. Focus is a bit soft.
Sometimes an off center composition is more interesting. This one needs some punch somehwere - maybe saturating the yellow stamens? Maybe a closer crop? High contrast black and white? Despite the perfect focus and DOF, this one is lacking in composition.
Good exposure with lots of textures present in both the petals and the leaves. I also like the fairly muted colors, makes the image feel a little more delicate. Simple but pretty.