I think a touch of saturation would have made the colors more vibrant. Perhaps cropping or altering shot so tree was in the middle would have kept it from ditracting from the shot. Perhaps it could have framed the right side of the building better.
Perhaps from a different angle would have made for a nicer shot. I find the tree in the dead center of the shot to be very distracting and takes away the focus of what the shot is supposed to be about. I also find the contrast from the building makes the photo appear to be a little OoF. Good luck with this challenge.