The effects are nice. I would get rid of the text on there though. it really doesnt fit at all. also, work a bit with lighting. create light sources that work with the light shown in the stock.
Oh yeah. Probably your best yet by far. The left side is a bit pointless, though. And maybe make the text blend in a bit more. keep it up!
Definatly your best DA! The effects are amazing and the colors are great. Two things though: A light source would be perfect on the left bottom of the render. Not too strong but it would go well with the stock's lighting. Also, the sig flows well but the shield is totally missing depth...I dunno how to fix that xD but it ruins the sig a tiny little bit. 9.25/10