This is pretty cool but I think I would have liked it better had you used a bigger aperture or longer lens or whatever you needed to do to make the DOF shallower, the reason I am saying so is that this shot is too busy for my taste and the butterfly and sun don“t stand out as much as they could do if that were not the case. LOVE the composition though, nice work on that one :) 6 from me.
From yout title I know that the sun is an important part of this composition to you; however, cropping it out may allow you to balance the saturation and contrast better to help make the colors of the butterfly pop. You may also want to consider cropping this into a horizontal image, as the negative space to the right of the butterfly is add more to the image than the space above the butterfly.