My feeling is that, if ever a picture would benefit from a tilted horizon, this one would.
Three reason
Every line is skewed and a tilted horizon would just emphasize that.
The top half is pretty much the same old heavily pped clouds; a tilt would throw some of teh content up there.
the fence post in the lower right is a strong design element and would benefit from being further from teh edge and more solidly planted in the picture.
I will send an example by PM and would be happy if you would allow me to post it here.
Bang on! Thanks for taking the time to play with the photo. I love the results so I took the liberty to copy the location to post it here:
I think I would tilt it just a little bit less, but it really works for me as is.
I'll reprocess this one taking into account everybody's ideas. Thanks for the feedback and comments!