Although I like it, I think I'd crop down to near the top of the tree. I think it's more interesting and leads you to the sun better. I don't think the top adds anything and takes away your eye movement. In low key your eye is drawn to the lightest thing first. With the top intact you are torn where to go. If it's cropped you go back and forth diagonally from the left(top of the tree) to the right (sun) and bounce back and forth.