The focus point seems a little off (on the bud on the far left). Perhaps try opening the aperture (lower the f-stop number) a little bit more, this should bring more of the background (ie other flowers) into focus.
"To photograph is to hold one's breath, when all faculties converge to capture fleeting reality. It's at that precise moment that mastering an image becomes a great physical and intellectual joy."
~ Henri Cartier-Bresson