If u know you are preparing for any exam and like to pass in flying colours, then follow these steps.
1) Always make sure to prepare ahead, you don't have to wait to about a month towards examination date, make sure to start your reading at least 5-6 months before the exam.
2) Always make sure to read wide, you don't only depend on a textbook, you read and study multiple textbooks cause you can never tell where the questions are going to come from especially JAMB and Post-Utme..
3) Then during the exam, you have yo make sure to remove any form of fear or pressure make sure to be always mind free when taking an exam.
Am sure if you follow these steps then there is no need for you to fail in any way..