What information should be included in an employment letter for a DTV visa application in Thailand?

Example:

Letterhead of company, like Fantasia land ltd Co

Address, fairy tail street number 666

Happy town in Disney world.

Dear reader

Hereby I, Mickey Mouse,, CEO of above company, state that George (full name and passport number) is a member of our staff and allowed to perform his duties for our firm using the world wide web from Thailand.

George works for our firm since xx/xx/xx and due to his good performance we agreed on a contact until xx/xx/xx as on-line employee.

Signed and stamped with company stamp, dated

CEO Mickey Mouse.

Or something else, use your imagination or AI.