In terms of Section I, make sure you know your techniques. I cannot stress this enough. Whether it be language techniques or visual, get familiar with them. Try responding to a whole range of texts and pin point whatever you can. What I personally do, is grab a text and find all the techniques I can by anotating as fast as I can without stopping to think. Remember, the concept is really important as well. Start thinking about concepts you can draw out from texts like "Imaginative journeys are the catalyst for our learning" etc... You will most likely need concepts like this for the last question. And reinforce this with techniques you can find. And make sure your last question doesn't run down on the same answers you wrote for the previous questions. The questions before the big marker (Out of 6 I think) shouldn't be about trying to show off. Answer the question and get it over with. Showing off is generally for the 6 marker so keep that in mind. Play around with it and you should be sweet.
As for Section II, this will vary depending on the type of journey you are doing. But nevertheless, make sure this section is blatant about the journey you are presenting. Remember to use TECHNIQUES and make sure you vary in sentence structure, language, syntax and so forth. It is better to finish your Creative Writing rather than to leave it if you are running low in time (No matter how crap your story is). And remember about the Setting, Complication, Resolution. Good stories tend to have their complication at the start and resolute as the story goes, but that's totally up to you.
Section III is all about knowing your sh** inside and out and how to play around with it. Make sure you become familiar with adjusting your thesis statements so that it ANSWERS THE QUESTION. If it doesn't answer the question then it's simply not worth answering. Although it seems so logical to say, majority of the people from last year failed to do so and wrote an essay which they memorised without ANSWERING THE QUESTION. Just remember to do so and load it with techniques, quotes, but don't even attempt to re-write the story; that's the last thing the markers want. Discuss means discuss, not multiple paragraphs of statements so keep that in mind. Structure your essays right and get the flow of your piece worked out. Then and only then will you see yourself achieving a band 6.