Reread the description of your task (for example, the advertisement of a job opening, instructions for a proposal submission, or assignment prompt for a course). Think about your purpose and what requirements are mentioned or implied in the description of the task. List these requirements. This list can serve as an outline to govern your writing and help you stay focused, so try to make it thorough. Next, identify qualifications, attributes, objectives, or answers that match the requirements you have just listed.
Composing the Body. Strike the Right Tone: The tone of the letter must be formal, clear and polite. Do not use fancy, lengthy, and big words. One must be persuasive in the letter. Use of Personal Pronoun: One can use the personal pronouns in a business letter. If writing on behalf of the organization one must use ‘we’ instead of ‘I’. Write Precisely and Clearly: The content of the letter must be precise, clear, brief, and easily understandable. Use the Active Voice: Always write your letter in an active voice. Be Courteous: Always write a letter in a polite and respectful way. Always use courteous words. Use Additional Pages: If the matter is not fitting in one page of the letterhead, use the second page. One must keep in mind to include the page number on the second and subsequent pages.