Obviously do your best. Stress your strengths. Be confident but not arrogant. Dress for success. And all the rest…
But, keep in mind that even if you’re the best candidate applying for the job, you may not get it. So, if you’re not chosen, it may not be anything you did wrong.
Yes. Had it happen to me. I applied for a position. Got the “thanks for applying letter”. A few months later, I ran into a person that was on that hiring board. Got told that, at least in her eyes, I was the top candidate. But, nepotism stepped into the picture, so, I didn’t get chosen.