Should I or Not?

Hey!  So sorry my postings have been so stretched out over the coarse of the weeks!  Anyway, tomorrow in my English class, we have the option to speak in front of the class.  It's a speech from the play Antigone.  For reciting her goodbye speech, you can receive extra credit.  I just hate when teachers put students in positions where they have to truly think about whether they are comfortable speaking in front of the class or not.  I know that I want to be a broadcaster and I should want to speak in front of people, but I just haven't broke through my shell 100%.  I am maybe 65% more comfortable speaking than I was a few years ago; to me that's progress.  I am becoming so worked up over a 1-2 minute speech.  On top of that, my teacher told us that we would have to also wear either a big bed sheet over us or something stupid because we have to make it look like we are from Ancient Greece.  This makes me so nervous I can't even bare it.  Sometimes when I speak in front of a large group, my face becomes scorching hot and I turn beat red, and my voice just goes.  Like I could be speaking and when my heart is racing, my voice just disappears because I have been forgetting to breath.  I know that if I do the speech, I will feel so accomplished.  If I don't do the speech, I will feel like typical me and backing out because my nerves got the best of me.  I am so confused right now because I don't want to mess up and look like an idiot.  I don't even raise my hand to read a paragraph in something we read in class, so how am I suppose to speak standing up in front of the class with a burst of emotion and enthusiasm?  I know I should probably just speak in front of the class to feel the satisfaction that I have been wanting to have from a big accomplishment, but I just don't know.  I would love any comments you have for me because I don't know what to do!! ThankssxoxoxRachel :)<3