Here are the Golden Rules that you need to follow for F-1 Visa.
1. Looking good and confident.
2. Looking disciplined and organized.
3. Sounding natural in accent and communication.
4. Maintaining eye-to-eye contact with VO throughout interview.
5. Staying positive throughout.
6. Clarity of thought in expressing views.
7. Speaking Loud with confidence.
8. Having good presence of mind.
9. Showing good knowledge about your area of interest.
10. Having good and credible future plans.
11. Proving you as a serious student in studies.
12. A little bit of sense of humor.
13. Exude professionalism in whatever you do &
14. Smile and put Visa Officer at ease.