1. Read through the whole paper and find out the problems with the most missing points. 2. It is suggested to accumulate missing points, find out the cause of the error and correct it (remember, really understand it thoroughly). 3. Look for the cause of the overall error, for example; These problems are caused by carelessness, and those problems are caused by ... 4. Corrective measures how to avoid mistakes that should not happen ... 5. Set a goal, plan how much to take next time, and motivate yourself to work hard for the goal. ...