Yeah after giving test, analysis is the most important and crucial thing you have to do, otherwise there is no such use of this test in the long run if you do not learn and verify your mistake.
First of all try to give the paper as the time span and in a condition of actual exam day. Then have some break for 1-2 hours. Then you can sit for analyzing the test with a notebook where you will note down the specific points in a short and crisp manner
- what was the trick in the question you missed
-what was there in your mind when you were solving the question
-whether you made silly mistake or unaware of the concept, topic, problem etc.
Then go to the next mistake and after going through all the mistakes carefully, practice similar questions from books and materials so that you can not face similar situation again.