Some points need to be kept in mind while writing a paragraph. The first line of the paragraph should contain the topic on which you are writing and at the same time it should also indicate your opinion regarding the topic. Supporting ideas that you are planning to include in the following sentences should not come in the first line. At least 3 sentences should be written to support your idea with the help of reasons, facts, examples, comparisons and statistics. Now close your paragraph with a concluding sentence that reasserts your opinion in different wordings. Its recommended that you write sentences that clearly expresses your opinion in a simple yet effective way.