I love the big black space dominating the top of the photo. Wonderful work! My first thought when I saw this was that both butterflies should have been in color....but that's just personal opinion. This is nicely done and should have scored higher. :)
beause there is soo much negative space in this, it really make it different and wonderful. the only suggestion i have is to try and get the whole background in focus as well, it would add more dof and make this the perfect shot.