I agree with @Nullo‘s point that what is not said, matters just as much as what is said. The only thing he did not say that I would add is smile, especially if you are female. His point about handshakes is very important. Women often have weak handshakes, and it is awful. Shake hands with your dad, uncle, someone who can coach you on a good handshake. I am a woman, and I hate shaking hands with women who are incompetent handshakers, and it happens a lot. It probably did not effect if I hired or someone or not in the end, if they were great on every other measure, but it was annoying. You don’t have to offer your hand first to intitiate a handshake, but if they put out their hand, best you be able to do it well.
What type of companies are we talking about? Retail? Consumer Goods? Tech companies?