Dress the part
Your interviewers will form an impression of you before you even open your mouth, so make sure you are presented in an appropriate way. Your choice of outfit could vary widely depending on the organisation/industry you are interviewing with, so do your research on the expected dress code. If in doubt, opt for wearing something more conservative.
As a general rule, you want to be remembered for what you say, not what you wear, so choose an outfit that is professional and not distracting. Remembering details like clean shoes, neat and tidy hair and minimal jewellery will help you make a good first impression.
Your people2people consultant can guide you on the appropriate presentation for your interview.