If I could nitpick, it would only be on two things: (1) I would have composed the shot to the right by about an inch, so as not to chop-off the rightmost flower, and (2) I would adjust the overall color a bit as the whole image has a "green wash" to it.
With those two nitpicks out of the way, I love your image otherwise! The delicate lay of not just the butterfly, but even the flower petals, is most definitely dreamy and the bokeh behind it all accentuates the effect. Very nice indeed
Jack
.