The examiner “has to read” your full name and candidate number as part of the official recording right at the beginning of the test. Don’t worry if he/she “mispronounces” your name
The “first thing” you’ll do after saying good morning/afternoon/evening is say your full name – pronounced correctly, of course! And that’s all! The Examiner continues accordingly even if you provide him/her with your nick name. And due to psychological reasons, we strongly recommend you to do so if you have a nick name