A bit over worked for me and the sky is pretty much blown out, but I like the upturned trunk and the fact you have it along the third, so compositionally it works just fine.
Personally, I would have worked this scene for quite some time I think, as I find after a while you start to get into the image and begin to get better results. I would have then probably moved towards getting some kind of frame filling abstract from the bottom of the upturned tree.
Photobloke