I like it. It has a "black hole" kind of feel, as if the trees are being sucked into an interstellar vortex. As far as the tree exposure goes, I'm thinking that the trees are a bit bright, with the appearance reminicent of palms trees lit up at night from upward pointing spot lights. Try turning down just their luminosity, but leave the saturation. Actually, in B/W, they work as is. Overall, a really nice shot.