Yes to cropping the top just a sliver, and to pull back on the sharpening (though I think part of the thing that makes it look more over-sharpened than it is, is the texture of the mesh. That always messes with a person's eyes, no matter what else is going on.) I don't mind the contrast/brightness level, but now I'm curious to see what Derrel's suggested brightening would look like.
These are all relatively minor critiques (the sharpening probably being the more significant of the three.) Overall, I love the textures and composition, and the contrast of the solid, brightly-lit window frame with the 'abyss' of the black inside the window.