I'm no professional, but from what I see, I feel that the blurred background would work better if the focused are was larger. The focus draws attention to the unfocused area more than the focused are (if that makes any sense). Also, I would raise the yellow saturation to make the flower stand out more (but that's just me). I hate to be focusing on the bad things, overall it's a pretty good photo, the way the shapes fit together is very nice