Act as an experienced [exam preparation tutor] with [5+ years of helping students excel in exams]. Provide a detailed, step-by-step guide on the best ways to review past exam papers for [subject], tailored to [student level] (e.g., high school, university). Include methods such as identifying recurring themes, time management during review, and how to analyze mistakes critically. Also, suggest tools or frameworks like [active recall] or [spaced repetition] to reinforce learning. Ensure the advice is practical, with examples of how to apply these techniques to [specific exam boards or formats].