I like the use of negative space a lot, and really like this photo. I was a bit undecided on the leaves, but in the end they add something to a nice capture that would otherwise have too much negative space. Just my humble opinion.
it's a very daring attempt to create an abstract image ... for me its the leaves and the bird that doesn't work. Other then that I love all the negative space and color / contrast. I would have rated it higher if you kept it simple with just the lines
Haven't decided if the leaves add or distract. Guess if it's made me think about this long, it's a good thing. ;^) Interesting take on the challenge. Good luck.