When going to an interview, the way you present yourself is key. You should be wearing a formal or suitable dress code for the job role. Confidence and communication are also important in job interviews. Keeping a formal tone throughout the interview is important as this shows you are professional and well mannered, this can increase your chances of being employed.
Being on time is very important, being late does not show a good work ethic and does not fill the employer with confidence that you will show up to work on time.
The language you use in an interview should be professional, not swearing. You should make sure that you are sitting up straight and not slouching as this could give the interviewer the impression that you are lazy and not very interested in the job role that you are applying for, it also comes across as very unprofessional. Eye-to-eye contact is also important as it shows that you are comfortable, confident and want to engage with the interviewer. The interviewer wants to see you excited about the chance to work for the company so don't let your body language give a different impression.
Before going into the interview, you should research the company and the job role and prepare for any questions they may ask you. Thinking of questions to ask the interviewer at the end of the interview is always a good idea, whether it is about the company for a while or about the job role. It shows that you are interested in the job.