Newest.

http://i45.tinypic.com/qsa9ts.jpg

1. very neat and it flow really well, except that extra ball in the left corner.
2. the brightness is a bit too in some parts.
3. you could try adding some text for it to be meaningful.

Thanks, this is good advice. I will be sure to use those tips. :)

Don't add text unless you're comfortable with it and it improves the quality of the piece; if you just put it in their it'll ruin it. I actually like the ball but it should be more emphasized in the lighting, as well as the two near the bottom right of the render. That way the lighting will draw more attention to those and the focal will be emphasized as well because it's near those. Work on your colors a little as well but I like your composition and blending.