Great image, good tonal range. However, the top corners could do with a bit of work. Looks like a filter got in the way. I used to own a Mat 124G, great twin-lens camera.
I don't think the sky adds much to this image. I would consider cropping down to below the top of the trees in order to focus the viewer's attention on the structure cantelevering out over the water.
Thanks for the comments. The vignetting effect is not caused by the filter, but by me. Perhaps I overdid it? I like it this way, but I'm always open to suggestions.