I heard valerian is good for anxiety but I took a pill once but it didnt do anything. Another time I took two pills but I still didn't notice much. I think it takes weeks of taking it during the day before you notice changes I think. I think you should try kava kava.
oh yea you dont have anything else...hmm still try the valerian if you want and just do things like deep breathing and progressive muscle relaxation. Do neck rolls, stretch out your jaw, squeeze your shoulders up, then down, squeeze your fists, then release to get rid of tension. You can also try reflexology, try pressing your finger tips as hard as you can together for a few minutes. Or try clasping your hands together, its supposed to be a stimulation to the whole nervous system and can relax you after like 5 minutes of doing. Try also to stretch and yawn periodically, its a natural way to get relaxed. Also stay positive and smile just before, it sends a message to your brain to calm down.
well i forgot you wrote this in january, but try this for your next presentation in the future.
"Stand before the people you fear and speak your mind -- even if your voice shakes."