Oh yes, the supah dupah cool style of placing a render to a nice scenery stock. I'm lovin' it One thing though, his left arm (from our view, not his) looks a bit odd since it is beside a rock (?) That said, it would be better, IMO, if the render was placed elsewhere in the scenery stock.
I tried moving it else where however it never seemed or felt like it was realistic or normal. thanks for the comments guys
^May 3rd^ I think the lighting seems to be really well done, but it feels to monochromatic too me. I dont know if that is what you were going for, but the green colors that were naturally in the image seemed to have faded.
Its missing something.. it has a feel of intensity to it which should capture your attention but it just doesn't for some reason. I'd recommend either messing with the colours and saturation or resizing the stock and getting much more detail into the bg. Its definately got potential but its missing the mark right now.