I like it, but its just a bit too dark for me. Could be differences in monitors though. I'd also like to see a little more of the tree, unless it loses something at that point.
I would also like to see a little more of the tree - at least a bit of the main trunk. I love the sky though, moody w/o being overdramatic - just a nice backdrop.
I can see where you are coming from, and to a point it works.. the way the fingers are pointing towards the sky..
Would be awesome if there was a lone raven in the tree.
And I agree about the red border. It just distract's too much. Plain black or white would work for me. And perhaps adjust the contrast - I think it is a little dark, and with bumping up the contrast, you'll get a bit more "oomph" into it.