1. First, choose the appropriate reason for leaving the company: before writing the application for leaving the company, make sure that the reason for leaving the company has been decided. This is because of personal development, working environment, salary and other considerations. Defining the reasons for leaving helps to express clearly in the resignation application.

2. Secondly, choose the appropriate format: Resignation applications are usually in formal written form. E-mail, letter or application form can be selected to ensure compliance with the company's requirements and policies.

3. Finally, specify the date and recipient of resignation application: specify the date of application and the information of the recipient. This information usually includes the company name, the name and position of the superior supervisor.