The past exam is a mirror reflecting your true ability. Look into it, and then get to work. Ganbatte kudasai.
Before you start studying, take one past exam (or sample test) under timed conditions. jlpt past exams
: The Official JLPT Website offers one sample question for each test item type across all levels (N1–N5) to help you understand the format. The past exam is a mirror reflecting your true ability