It's looking a lot better than when I first saw it!
I would suggest fixing the buttons (pixelated, mentioned above) and either removing the black border from the bottom half or putting one around the top (probably the latter, the border looks good).
I would also suggest making the whole thing as close to 800px as possible, so that people like my geezer dad can be content
Other than that, keep up the good work! It's looking nice!