Behaving is not something you should need advice for. Yes, you should “behave”. Don’t shit your pants either. But if anyone comes out of an interview and says “

Behaving is not something you should need advice for. Yes, you should “behave”. Don’t shit your pants either. But if anyone comes out of an interview and says “well that guy was well behaved” I’m going to have a very unimpressed opinion. You should 100% be comfortable showing your flaws.