The color toning here is exceptional. The overall effect of the image is quite nice. The whole danged thing is leaning over to the right, though; I wish you'd rotated CCW to correct that. I also wish you'd pulled a little more shadow detail up. Still, a lovely shot.
I like this. Sepia often does not work for me when it is giving an old fashioned look to a modern scene, but you did not use it that way here. It enhances the clouds and the dreary day appearance.