1. Yes, I can build up a thank you letter by myself.

2. To build up a thank you letter, one can follow these steps:

• Begin with a formal salutation such as "Dear [Name],"
• Express your gratitude and mention specifically what you are thankful for
• Reinforce your appreciation and how it has positively impacted you or your organization
• End with a closing statement and your signature

3. The format of thank you letter that I make usually includes:

• A clear heading and date
• A formal salutation and opening sentence to express gratitude
• Main body to explain the specific reason for the thank you, and how it impacted the writer
• Closing sentence and signature
• Contact information

4. Thank you letter is similar to a friendly letter but it is more formal and specific, it is used to express gratitude and appreciation towards a specific person or organization, while friendly letters are used for casual communication.

5. The advantages of thank you letter based on my opinion are:

It helps in building and maintaining good relationships with people, whether it is a customer, a client, or an employee

It shows that you are an appreciative and considerate person, and it can also create a positive image of you or your organization

It can be used as a tool for networking and to keep in touch with people

In case of a job application, it can also be used to show that you are still interested in the position and the company.