The first thing you do to edit your paper is to read the paper throughly. Read sentence by sentence to make sure that you do not miss anything. Read one sentence, then make the necessary amendments. Sometimes you have to read a a paragraph completely, to make sure everything is all right or not. Paragraph must necessarily be well developed, logical and all sentences within a paragraph must be well linked to present the idea to the reader in a coherent manner. While reading the next paragraph one must keep in mind to check whether the two paras are connected or not. Continuity in an essay is very important and this must be checked for, while writing one. After this you will have to check for spelling errors and punctuation mistakes. One punctuation mistake can alter the meaning of an entire sentence, so one will have to careful while using punctuation marks. Keep an eye out for errors in tenses, use prepositional phrases as little as possible and use active voice in place of passive voice, as much as possible. Thus you can see that editing a paper is no mean job. It requires time and effort on the writer’s part to produce an error free paper.