The colors are very strong, very vivid. Obviously your sharpness and DoF where perfectly set in order to capture everything well, the colors of the leaves and sky and all... You've obviously got the technical ability and knowledge, I just think this lacks in composition.
The buildings and clutter in the bottom really takes away from the beautiful sky and leaves that is really the sole focus of what is in this photo. Even if you were trying to reference some other building or object in order to give more dimensionality or contrast to the tree and leaves, there could be a better outlook for deciding what to include in the background. Even if you pulled the buildings and extra trees out of focus in the background, it would've helped maintain the level of detail on the leaves/tree only. Pulling the camera back and getting a more deeper angle would also help to remove that clutter from the bottom and leave just sky and more of the trees and colorful leaves...
That's just my tip for improvement... =) Otherwise good job, keep up the good work!
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