Classic Greek male torso

it was a beautiful day in California today so after my morning jog, a little work, and some lunch I headed down to the Stanford Cantor museum to hang out in the Rodin garden and read a book.  After a while I went into the museum where I enjoyed a display of Souix Native American drawings that told the story of the Battle at Little Bighorn (Custer's Last Stand).  Then I stumbled onto a sculptor of a classic Greek male torso circa 50 B.C. and decided to sketch it.  Here is my sketch.