Writing
Be careful to always use your own words during writing exam. The words will not be include those are copied by another students by the examiner.
When you start writing before that you must think what you have to write about that topic.
Words should be in your own language and Clear and Precise.
Speaking
For speaking test you must understand that how you can improve your speaking skills by practice.
You can improve your speaking skills by talking with your friends or with your office colleagues, or at work and on the mobile.
In speaking test the examiner just check your skills and ideas that how you are using those skills and ideas while speaking about the topic.