Work on the depth. But that is pretty easy, just burn and dodge the corresponding parts and g. blur + erase. Nice concept though.
the background looks pretty nice, but what throws me off is the smudgy mess behind the soldier that doesn't flow well at all.
It's tight. I think the render could be sharpened a bit though. And the flag on the right kills it imo. :\ But the smokey style is totally cool. Agree with Cheap as well. Keep it up mate.
Looks good but needs a better focal, its really blurred, setting iton lighten really takes away from it. I suggest you atleast erase it voer his body. But real cool concept man.
The bg is great but work on your focal(it looks like it drowns there) and do something to the overtaking effect behind him