I'm not good at making a small talk before I go on stage because I'm too nervous. For other people, that kind of small talk is super beneficial. It reduces their nerves and allows them to not be so stressed out about what's meant to happen but instead of refocus their energy on the people who are around them. There's plenty of tactics you can employ to get you ready to go on stage. And Amy Cuddy did a TED talk, speaking of which that she really, it's a sync that's only 20 minutes but she goes into how your body language shapes who you are.