Good effort, but the silvers are too shiny and untarnished, and the color contrast between white, red and green seems way too sharp. Please, don't take it the wrong way... I think some retouching to make the model look grimier would go a long way! :)
Ok that will sound crazy to some but I like his silver boots and teh fact I can see the "grass "reflected on them.Otherwise,you need to make some lining and perhaps some more accentued highlights and it wiil be ok.