One thing I regret the most.
I didn't photocopy or take photos of the highlighted PR copy for the next exam. This could have greatly improved my preparation for the second exam and saved me a lot of time. I thought about doing it, but I was lazy in June, and now I regret not doing it. For those taking their first exam, I recommend photocopying your highlighted PR for the next one, especially if your exams are not scheduled back-to-back.