Nice sunset! my favorite thing about this image is the gradient of the sky, that particular hue it has is enchanting. I also like the way it isn't completly silhouetted in the foreground, and there is still some detail in the trees.
you might try cropping it, if anything, crop it on the sides, not the top and bottom. it might even look really good if you cropped it at the pole and the middle of the tree... get a really tall image, but it would capture that gradient of the sky and enhance it.
I photographed them. :) That shot is straight out of the camera, just resized for posting on here. I think I should crop out some of the edge details - the edge of the roof and the stop sign, perhaps. Or maybe just crop out the roof and darken the foreground. But as it stands, what you see here is what I saw in the viewfinder when I took the shot.