First of all... its pretty overtopazed. Tone that down a bit.
I also think the lightning needs some work.
It looks like you have 2 lightning source's..
Look at the render and try to find out where the lightning is comming from. Then create one lightning source at the place it should be.

Also I think the blending needs some work.
Put some c4d's in front of aragon and it will look better...

I kinda like the text
And the effects behind him are looking pretty cool IMO.
Maybe add some adjustment layers so the colors match better with eachother.

Keep working at it.. cause as Zen said: It looks a bit unfinished