DOs

Make sure you are familiar with what happens, and what skills you need to show, in each part of the test.
Practise speaking English as much as possible in groups and in pairs, both inside and outside the classroom.
Listen carefully to the instructions and questions during the test and respond appropriately.
Speak clearly, so that both the interlocutor and assessor can hear you.
Use all the opportunities you’re given in the test to speak, and extend your responses whenever possible.
Ask for clarification of instructions or a question if you’re not sure.
Be prepared to initiate discussion as well as responding to what your partner says.
Make full use of the time so that the examiner who is listening hears plenty of your English.

DON’Ts
Don’t prepare long answers in advance, or learn and practise speeches.
Don’t try to dominate your partner or interrupt them abruptly during the Speaking test.
Don’t leave long or frequent pauses.
Don’t worry about being interrupted by the examiner. This shows you have spoken enough. The tests have to keep to the time limit for administrative reasons.