You need to get all the mistakes out of your self-presentation first by practising. Once you’re comfortable with it, you then enhance it to tailor it for whatever job you interviewing for, through your research and preparation.
Here are the three steps you can take to deliver a compelling and poised interview performance & not to suffer stage fright:
Polish your basic message
Get your skills, competencies, and other qualifications down. Rehearse until you’re comfortable answering questions and have practised your basic presentation techniques.
Personalise each sales pitch
Research each potential employer to customise your basic presentation for each job.
Spotlight your audience
Focus on how your talents can benefit your audience (interviewers). Don’t focus on yourself or worry about how imperfect you may appear. Focus on your selling your strengths that can help you do the job and benefit the employer.
Focus on your audience, not on yourself. Focusing on the audience is a giant step toward eliminating nervousness.