i love the first piece, and all of the hands you draw. the technique with the shading, the stiffness and linework of your first post is awesome. in some of your later posts the work seems more sketchy, the shading a little dull (the woman, the hellboy, etc). i suggest sticking with the style of your first piece. again, the linework is great.
i have a friend who freehands everything as well, he grabs a pen and starts drawing with no plan and no way to erase. now he has a style all his own, and it's awesome. looks like your headed the same way!