Hi Tejaswini, There are certain points that should be kept in mind while appearing for an interview:

1. Prepare well
2. Listen carefully to the question.
3. Keep calm and slow down
4. Make eye contact
5. Give evidence
6. Avoid yes/no answers
7. Don't waffle
8. Avoid 'yes, but...' responses

Hope that solves your query,
Feel free to post more queries,
Thanks & Best of Luck!!