1. Probably most important of all! Don't go to your pre-production pitch with a first draft animatic; you will spend the following two weeks of production time freaking out. Actually, even if you have a pretty neatly wrapped-up animatic at your pitch, you may still spend the next two weeks fixing/developing things, but it will be slightly less painful.
2. Locked-off cameras are TEH EBIL. Cameras move around a lot more than you might think. That said, don't move cameras just for the sake of moving 'em.
3. Use the 12 principles.
4. If you get stuck, don't hide at home and freak out! Bring your problems in to class. Teachers and classmates can help you shake loose some solutions; sometimes really simple/obvious ones.
5. All-nighters aren't much point if you spend the next day feeling miserable. Only do 'em in absolute desperation.
6. Copy, and copy well. Feed yourself the good stuff (visual, audio, heck even food), and incorporate what works for your project.
(I'd love for other people to add their thoughts and experiences to this thread! Currently in an empty directionless daze the day after the end-of-year screening :D )
liebestrauma - http://rach3.animationblogspot.com