I think the rule of thirds works well here in the sense that the proportion of barn to not-barn is pleasing. I'm not sure what I would do to make this better, but there are some things I'd have played around with that might have also made interesting photographs.
- I like the reflection of the sky in the old window and would have looked for a shot that featured that.
- Do your eyes end up traveling down the length of the building to the horizon? Mine do, because the windows create a strong 'leading line'. I might have played around with that, maybe step a bit to the right and set the focus to the distance to make a photo featuring the house on the horizon. And for this I'd also consider a lower perspective with the horizon closer to the bottom - maybe 1/3rd from the bottom, but it is hard to say because how the line of windows matches up with the horizon seems like it would be important here. I'd try to keep that bush at the right edge of the frame, just like you have it.
- I'd have tried lowering my perspective slightly so the top and bottom lines of the windows were symmetric.
- I'd have looked for a shot where the near window is fully in the frame, top-to-bottom.
These would not all work out, I'm sure, but 'delete' is easy, and playing around like this is a great way to discover.