I\'m probably failing World Culture...

I had this stupid assignment in World Culture & the Arts to pick two pieces of art and tell what these pieces says about the culture of the people who did it.  I had a choice between sculpture, architecture, literature, or painting.  I had to pick one piece from the Ancient Islamic civilization and one from the Ancient Chinese civilization.  Then, I had to write a 350 word essay on each piece.  Well, for the Islamic civilization, I chose the Alhambra Palace.  I described what the palace looked like, the artistic styles of the palace decorations, and what these decorations said about the Islamic people of that time period.  For the Chinese civilization, I chose the Terra Cotta Warriors that were found buried in the first Emperor's mausoleum.  I described these and told what these pieces said about the Chinese people of that period. I worked my ass off for days on that assignment.  I am having a hard time getting caught up and I told my instructor that I am trying.  He said not to worry about it because he understood.  He said just to do my best.  Well, I just got my feedback from him on that assignment.  He told me that I did the entire assignment wrong...oh, with the exception of the title page and the reference page...I did that part right...ugh.  He said that I was supposed to describe what the pieces said about the people who created them and the society as a whole...not go into a big description of the art itself.  Umm....I DID tell what the pieces said about the society!!  He also said that the Chinese section was wrong because I was supposed to pick ONE art piece, not thousands of pieces that make up a group.  Well, excuse the shit out of me!  That work of art was the most interesting to me, so sue me! Before I started this class I had a 3.92 grade point average.  I probably have a 3.5 now if I am lucky!  I can't believe this shit.  It is driving me nuts.  I am fighting back tears and nausea!  Can this guy not give me a break?  Can he not see that I am trying my best?  I just wanna cry or give up or something.  I'm only a year from my degree....I can't give up now.  I wish this guy would just give me a damn break.  I so hate this class.