1- Make sure you show your CV to someone experienced.
2- Read a little about company before you visit.
3- Google common questions you might face in your interviews. It will boast your confidence that you are prepared.
4- Switch off your phone - Dress professional - ARRIVE EARLY (on a very serious note)
5- First Impression. Greet with hello/salam along with a pleasant smile when you first see them. Tell them your name and forward your file before even the ask.
6- have a good eye contact
7- Leave an impression that your are keen to learn no matter what your expertise are.
8- Don't beats around the bush that you know everything. If you don't, say it confidently. Trust me interviewers have less interest in how much you know but more interested in your honesty.
9- Please do ask questions in the end of your interview. When i say questions that means sensible question. Interviewer will observe you and that leave a great last impression before you exit the place.
10- follow up an email after a week (NOT A WHAT'S APP MESSAGE
Good luck :) !