nice bg.. But unfortunatly it seems the render does not fit it at all... Imo.. It looks like the render is bad qual, or something... and it ruins the focal of ths sig.. keep at it mate
the background is nice but hte render is to contrasted with everything else should work on the render blend more or do some different to it.
I think a render of a robot looking out of the sig from the middle-right of the sig would look better... Nice sig though