Begin by writing your address, it should be on the top left side of the page. It should be of three lines only.
==Date==
The date should compulsorily be on the ate you are writing the letter, unless the is mentioned in the question.
==Salutation==
In this part of the letter, you should greet the person you are writing the letter to. For example, you can use Dear (name of the person you are writing to).
==Body of letter==
First paragraph- You can start by asking them “hope you are doing well.” And you can give a hint about what is the purpose of the letter.
Second paragraph- In this paragraph, you should write about the purpose of the letter and the main content of it.
Third paragraph- In this you should conclude the letter with 1-2 lines of the brief of the letter, and goodbye and mentioning that you will be waiting for their reply.
==Signature==
This is the end part of the letter and you should sign off by “yours truly or yours lovingly” with your name on the next line.
You use “yours sincerely” mostly while writing apology letters.