kk http://s164.photobucket.com/albums/u10/Tahg-ster/?action=view¤t=halo3spot_04.jpg all effects are default.
First one: I don´t like the texture, it looks a little... Grainy, and too I don´t like the pentool, maybe repair it or either retire it and put clipping masks in the bottom of Master Chief with splatter brushes (Because I won´t have FG effects). Second one: A little dark and too I don´t like the texture. So basically the texture is the principal problem. Apart from those things GJ.
I actually like this one a lot. The pentooling looks very graffiti style to me, but I think it would have suited a different stock a little better. Maybe some text underneath all that fun stuff? I like this one a lot as well, but I think you should add some lines or something near his face in that empty spot there.