The process in which an author submits a manuscript to be reviewed by other experts is called blind review. In blind review, the identity of the authors and of the reviewers are concealed from each other to prevent bias and to encourage honest feedback. Most journals and conferences use blind review.
This article explains how blind review works, why it's important, and how to do it. It also discusses some of the challenges and problems that may arise in practice.
Step 1: Reread your paper and circle the questions that you are not 100% certain about. Don't worry if your answers are right or wrong; the goal is to find reasons why you weren't 100% sure and to correct them.
Step 2: Work back through each question that you have circled and try to come up with solid, 100% certain reasons why your answer should change. If you can't think of any good reasons, it's best to leave the answer as is. This step should take about ten minutes for each question. Then re-score your answers, using your revised responses. The new score should be lower than the timed score, because you're not priming yourself for the next round of questions. This should give you a clear picture of the areas where your reasoning was weakest and how to improve your performance.