There is no right or wrong answers the writing test but it is important to keep YOUR answer relevant to the question. If you include ideas / sentences that are not directly relevant to the question you will lose marks.
Speaking
Again with speaking it is important to remember that the examiner is listening to your language and looking specifically for problems. The most common problems that will result in losing marks are:
Too much hesitation or repetition: You may not realize that this is a problem until you hear yourself speaking in English, try to record yourself speaking English and then listen to the amount of hesitation /repetition in your speech. You will be surprised!
[Page: ]
A lack of good vocabulary : Many people use too many “simple words” such as “beautiful, like ,dislike , big” and not enough “less-common” words or idiomatic phrases. A good area to work on is using lots of phrasal verbs as these sound quite “native speaker” and are easy to learn & use. Slang is also easy to learn and can help your vocabulary sound more “native speaker”.