Based off the best picture of me ever!
Should I add some colors to AA the sky?
I agree that the sky could use more work, but I like the AAing on the sillouhette of the guy c:
The platform you are standing on really sticks out as being a lot more defined than the rest of the image. Try and blur it a bit with AA. Also, touch up the sky, it's got a few jaggies in it.