Dear Mr/Ms (never use Mrs even if they are old) the employer's name you should included who and why you're writing to them. Name the place where you saw the position advertised. Try to start with ＂i＂, but don't use it for every paragraph. Explain why you are to be picked out of all the others, state you achievements, and /if not make highpoint on your qualifications and skills with the job. Then mention what you think would bring to the company if you join them. Lastly, politely request that they consider your application, conveying your appreciation for their time. Your sincerely signature