umm ok, it need some harsh tweaks but it's good for a start, ill give you that.
lets see... first, arms are really messy, so is the torso. polyflow is pretty bad which shows unwanted shadows.
although the lower part seems good enough to me...
and he is really really but really thin from the side view.
i know you are trying to keep it low poly but do it right. you have to make the polyflow look good even if it needs a few more polys.
gj though, keep it up