This is all about symmetry and it is just a tiny bit off in that respect. You could use skew or similar PS edits to even up the stuff around the edges. That would leave only the center, where the sign is a little fatter on the left, but that's barely noticeable.
I hear GIMP can do pretty much everything PS does, but I have not used it myself. It also has the reputation of not being that user-friendly, but I guess none of this software is when you first use it.
I'm with Ken, these shots are about symmetry and lines, got to nail that center.
Oh, yeah - we're there now. I can't see anything I would change.
Yeah this one is much more satisfying ... but (and I know you can't control this) that vertical piece on the upper floor is out of line. It'd drive me crazy enough to spend two hours shopping it into line. Nonetheless it is a beautiful photo![]()