Hi.He needs more brutal, like on front view. Work with forms you person than do animation.Now you animation for different persons, not for one.Animation from this side is too flat and not enough move shoulder.
Ok, I see. Look on this sketch.With form i talk about this:Animation sketch - see on move shoulders and footsI think, you understand me now and i hope this is usefull for you.
he has nowhere near the same sizes as the frontview. If it helps, draw him on a slight angle instead of a stright-up portrait, this will help you match up volumes
look at snippa's post, your guy with the profile view looks skinny, not beefy!