excellent work buddy. not much to critique here. the concept here is clear. The cool to warm light transition is perfect and the amount of detail is just right to convey the setting and the genre you shooting for. you're a pro and that much is obvious.
Very nice! This has a futuristic / steampunk feel to it. When I first saw it I thought of Deus Ex: Human Revolution. I really like the colors and details you chose to include. I look forward to seeing more of this style of art from you.
My only critique is that this is much too wide to be used on my desktop. It would be nice if you could submit this as a wallpaper pack. But not necessarily by changing the aspect ratio since that would smoosh all the wonderful detail in the picture. Perhaps cropping areas of this beautiful picture into separate pictures. (And I know this is not really the critique you were looking for, sorry... I don't have anything beneficial to say to help you improve, but I did want to express this wallpaper desire. )