OK, just remembered one more thing - something that is bound to earn you a few more marks!
Try as often as you can to include language in relation to drama. For example, use words such as 'proxemics' etc. Also use plenty of relevant quotes, quotes, quotes to, again, back up your points.
Another thing, make references to famous playwrights but ONLY if they are relevant. For instance, if one of the plays you saw was a Naturalistic piece of drama, try to refer someone such as Konstantin Stanislavsky (who was famous for his Naturalistic style. He wanted the audience to empathise with characters, this is where the 'fouth wall' phrase comes in. If you need more info, just Google him). Also, if a peice you saw was an abstract peice, try reffering to Bertolt Brecht. His style was opposite to Stanislavsky's in that, he wanted the audience to simply be spectators, and not to empathise with poeple on stage, but only sympathise. (Again, for more information, Google him).
Who? Where? How? When? Why? What? (Effect?)