I found this picture some time ago, and unfortunately I have no idea whom credit is due to.
I wasn't 'good enough' to do it at the time i found it, but i jumped in and got what i wanted. It took a while to do. Between 6-10 hours (I lost track). But it was WELL worth it. What I can do now, with and without reference has grown exponentially. Switching back to illustration mode, see you around sports fans.