I had a play with your original and came up with a similar result to yours. I just cropped a bit more from the bottom and a bit less on the left side.
Why ? hmmm,... I thought your leading line effect was already provided with (my) smaller square crop, and so I could remove some of the foreground pavement area which wasn't adding so much to the image. The house is moved a bit further away from the left edge giving it a bit more "room to breathe" and that small part of the building now appearing on the left seems to give it a little more of a 3D feeling. All just in my opinion of course.
