i'd love to see the original stock you used with this to see what you added in and what not. No offense, but i seen a lot of designers just crop a stock and slap some text and call it an original. Great tag though, i love conceptart-esk pieces like this.
you are right Not very much change here but There 2 reasons i made this one. First i wanted to do something else then i used to do with a render. second i need to work on my colors, i mean when i work on a piece. At some point my colors go to dark (after gradients/etc) where I start to try correct them witch mostly ends up me ruin it So here i just wanted to focus on the colors mostly. http://img833.imageshack.us/i/realismstyle33.jpg/
I think you did a great job you actually made the orig look like poop your versions alot better, good lighting, good coloring, for a simple piece its well executed, great job...