The correct answers are “Remember to look for mistakes you have made in the past”, “Proofread backward, beginning from the end of the essay”, and “Use only red pen for marking your mistakes”. When proofreading a text, one has to read something written or printed and mark any mistakes so that they can be corrected. In that sense, to look for mistakes one has made in the past is a very good practice that will be useful to easily detect mistakes in the text. Another good practice is to proofread the text in a different way than the usual one, that is, by starting from the end of the text. By doing so, one will avoid making mistakes one has made before in the text. Moreover, to use a red pen for marking those mistakes is useful to highlight the mistakes and, then avoid them in the final draft or version.