First one looks best, the only problem you have is your smudging isn't correct yet. You combine two things and ruin it. When you smudge, you duplicate the render a couple times and smudge it all over the sig without any brushes, and I know what you're trying to do is to blend him in. Use a soft brush with a lowered opacity and erase around him to blend. Back to the sig, again it looks great for the brushing, and I really love the colors you used, just try not to color his face, but only his shirt. And I'm loving the logo in the corner.