i wouldn't suggest doing another poem - they look for a 'variety' of text [forms]
movies can be good, lots of film techniques
however if you're not in for that, i suggest maybe some other sort of visual text? because it provides a variation of techniques ...otherwise you might get stuck with lots of language techniques...metaphors, similes, writing style whatnot ...
just my opinion
we havent done much creative writing prep.
none whatsoever for ext 1, and we did write one or two pieces for adv AOS. other than that not really...