What are "do"s and "don't"s of a thesis defense?

I am going do do my thesis defense next week. I am not nervous. On the contrary, I am so over-relaxed that my instincts tell me this will cause a problem during my defense.

I have only three questions in my mind:

1. Should I accept the questions during the presentation or should I say that I will answer the questions at the end?


2. I am thinking of going with the second option, answers at the end. However, what if a jury member asks me a question during the presentation?

Third one is something irrelevant:

3. Should I thank to my supervisors? If I should, should I do it at the beginning of the presentation or during the concluding remarks?

Apart from these, I will be grateful if you share any of your experiences with me. What are "do"s and "don't"s of a thesis defense? What have you encountered? What would you change if you were to defend your thesis right now etc?