I love your picture as is. The comments are all appropriate in answer to your original question, but as always are subjective based on individual taste. In the final analysis, do you want the angles leading up or not. Here is my take with no angles or columns and keeping the dome intact.
Really nice capture of the irredescense on the bufflehead. Those are tough with the bright white breast feathers. You might have those slightly blown out but the color and sharp water droplets override that IMO.
Years ago I joined a local website sponsored by our local newspaper whose purpose was to take and post pictures of Kern County, CA. USA. The site has since been discontinued. As an amateur photographer I wasn't interested in being published but to use the site I had to give permission to the newspaper for their use of my pictures if they so desired. Years later I was surprised to see that they had published one of my landscapes. Very cool.