You are very familiar with the paper, so don't write anything unfamiliar in it. If the defense teacher casually takes out a few nouns in the paper to ask questions, it will be embarrassing if he can't answer them himself.
Pay more attention to details. Many times, because graduates are rushing to write papers, they ignore many important details. Grammar, typos, reference symbols and reference contents in the paper should be appropriate and no mistakes are allowed. So when submitting or finalizing, we must pay attention to these. Never let your tutor correct these small mistakes.