I have quickly put together a wallpaper in some spare time, the solider render is from Black Ops 2 if you can't already tell.

I tried to use a digital character as the main focus with real life backgrounds, which is hard to blend together to make look good. I also chose a Black and White theme because it suits the renders used,
better. (obviously people can do this very well but i struggle because i'm not as advanced in photoshop just yet).

I haven't used any advanced techniques, only blurring, vibrancy changes, opacity changes and smudging. This is why it is only a basic wallpaper.

All i want is feedback on this, how to improve it and what to do and your overall opinion, thanks

The wallpaper:

Layers:


(i understand i am nowhere near as good as some designers on these forums, but we all start somewhere)