Great photo. Some of the elements in the photo are distracting. I would edit out the cars and do a blur effect on the buildings in the background. A bit of color in the sky would also bring the tree to the attention of the viewer. These are only suggestions. You have an amazing photo with or without editing. Nice job.
love the sushi sign in the bg :) something about the post looks off. looks like you took out something, maybe? this would look really great with a nice green pop to the leaves.
I'm not sure if the muted colors were an intensional choice, but I find them a little lackluster. It gives the tree a strange quality. It looks like maybe you used a flash and that gives the tree a somewhat plastic look. If you had maybe turned around and gotten to the other side of the tree and shot against a more simple background it might also strengthen it. I like the concept though.