Remain focused on the exam questions. This is one of the most crucial requirement to score well. Do not let your mind wander and do not worry about the left out questions as doing so may ruin other questions as well.
Use the time allowed wisely between different set of questions such as 1-5, 10- 15 and so on you normally get around 30 seconds to look over questions, use this time to go over as many questions as possible so that you have an idea as to what kind of questions you would need to answer.
The answers to questions are in sequence , for example if you have found answer to question number 9 but have not yet found answer to question number 8 , then you have missed it and hence do not try to look for answer of 8th questions , focus on questions 9 onwards and so on.
Most of the accents in the test are British , American and Australian , so practice listening to accent of different nationalities such as British , USA and Australia, you could do this by listening to news channels and documentary movies.
Try to anticipate as to what would be possible answer of question, this can offer valuable clues while attempting the exam.
Follow instructions very carefully. If the instructions state, "Write no more than two words, then you must not write more or you will receive no marks for your answer, even if some of the words you wrote were part of the correct answer.