It is important to look critically at what you have written and make sure that you are expressing your ideas clearly. Remember the reader when you are reviewing your own work. Revision means to ‘see again’. It is the opportunity to look critically at what you have written and make sure that you are expressing your ideas clearly. Revising your writing means looking at the structure and overall format, editing the spelling and grammar, and proofreading to catch remaining errors and polish the writing.