New sig - 'wow'

Just playing around with this render:
http://planetrenders.net/renders/alb...riorbylego.png

CnC please, I'm not great, so some suggestions would be nice indeed :)

http://syckaudio.com/files/images/leeumdeewow.png

A bit too busy for my taste, I can't decide what to focus on. When I try to focus on the render, the explosion distracts me, and vice versa.