The butterfly wings is backlite which obviously will cause the wings to be overexpose. This looks great as it shows the transparency of the wings. The exposure is fine, you just need to crop the photo so that the butterfly is the main subject rather than that big green leaf at the left.
I think there are quite a handful of butterfly photos posted. I'm sure you may peak into that to get an idea of what type of composition you may want. Nevertheless i feel that it's an alright shot just maybe a little too far.
The top left leaf got clipped off, quite a pity & the background looks a little too busy for my preference but thats personal. The right most details are lost entirely, looks like the shape of the trunk.
Would really love to see this one a little closer.