I really like the framing and the subject. I think you went a little too far in the aperture, though. You probably didn't need that fast a shutter speed, and you could've bumped the ISO to 400 or maybe even 800, both of which would've let you keep the aperture narrower for more DOF. With the whole butterfly in focus (or at least all of its antennae), I think this would pop a lot more. Of course, you don't get to make those choices when the butterfly lands, so play around a lot while you're in there. Try many different combinations to learn how it all fits together. :)
Or ignore me - look at that average from commenters!