Actually, I think this might have been a stronger shot without the black solid edge to the right of the frame. The focal point is (to me) too centered. Had you shifted the center of the top of the stairs to the upper right quadrant of the frame (observing the rule of thirds) it seems you would have included more of the graduating curvature of the rail and emphasise the nautilus (sea shell) shape.
Excellent effort, though. Kudos for getting on your back and changing your perspective and the point of view.
JT