So, there you go, final version. It could be tweaked and detailed forever, especially if I wanted to do the camera sweep, like planned. However, no time for this right now, so I just did a simple 2.5D camera push-in in After Effects, with some animated sky and birds flying by (of course, a necessary element :)).
You can have a look at it here:
or on my website, with better quality. It's also included in my matte painting demo reel.