Your photograph lacks in contrast very flat. The processing does very little to bring out the subject. I would suggest more contrast. I wish you the best in this and future challenges.
i like the subject, but somehow the detail and contrast seems flat. there's some wonderful details on the left side of building and perhaps exploring various close-up angles with strong light/shadow would really enhance this. the grass in foreground also has good detail/contrast potential. focusing on the 2 birds with groping branches attached to the upper-right side with window hole tells a story of its own. the overcast sky should not compromise good contrast. great potential here.
Nice idea. I think it's screaming for post editing. Could use some curves or levels in my opinion - to realy show off the texture of the stone and the boards.