'O' level Chinese is in around 2 months' time and I'm really bad in this subject so I really need some tips or helpful notes/guide for each paper (P1,P2,P3,P4). Thanks in advanced (:
Writing is the toughest of all compared to listening, speaking and reading in any language because it is a skill that require much training and practices, built upon knowledge of vocabularies, so-called your word power. Once you are good in writing, you will be good in the rest like multiple choice, cloze passage, comprehension, summary, conversation and whichever ways designed to test your proficiency level, because you need to read a lot and know a lot of vocabularies, idioms, expressions and proverbs to be able to write and use without reference or second thoughts.
If you are still struggling with multiple choice and cloze passage and all other non-writing tests, then it will be harder to write and pass. Usually if you could score B for composition alone, you should score A in the rest of the tests, when combine, you may still get A for the whole paper, best is A for composition, then an A for Chinese paper is almost reserved and secured in advance. The same pattern applies to English paper.
I am sure you have plenty of compo guide books for English, I would recommend a new generation Chinese compo tool book with guides attached, both are free for reading and downloading: