The camera seems very slightly off-level(roll) and slightly tilted(pitch). I often shoot unintentionally tilted frames. My problem is worse if I'm bending over and my head isn't level as I look through the finder. A tripod and viewing with my head level would help me on a shot like this.
Are you wedded to the 16:9 aspect ratio for this shot?
If not, you can make the shot "see more" in the vertical direction.
If you have panorama merging capabilities in software, the vertical field of view can be increased by taking another up-tilted shot from the same position and then combining the two shots in software.
In Lightroom, the path is: In Library, select the two frames, then select from Photo>Photo Merge>Panorama>Projection:Perspective.
In this scenario, the final shot would see substantially more at the top, but still have the "corrected" straight line architectural look. Call it a poor man's shift lens for increased field of view.
Of course, it won't be 16:9 any more after adding another shot on top.