I kinda work better under pressure... ^_^
But there was a point mentioned above about knowing your text type/structure. You wouldn't want to lose marks, or even get stuck on writing using the correct structure ^_^ I'd rather be spending my time thinking of my creative part of the creative task, rather than the systematic part, in which you shouldn't need to worry about in the exam (you don't have the time to ^_^).
I believe that our answer should demonstrate a good understanding of change, and that you show it clearly in the task. You should also work up a bit of flair in your writing ^_^ If you're not confident in writing a good piece in an exam, maybe you can do what smegger~san *points above* is doing and practice your creative respones ^_^ Either way, practise does make perfect... so just do the work now, and then go into the exam knowing that you have done the work... and all you need to do, is show it off ^_^
take care
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