Who is going to read your letter?
My friend, (numele prietenei/prietenului tău).
What is the reason for writing?
I want to spend time with my friend(s)!
What information do you need to include in your letter?
My adress, my name, and the date and time.
The letter:
Dear (numele prietenei/prietenului tău),
Please come to my party! It's at my house, (adresa ta), at 4pm, this Sunday! We will have a cake, drinks, and maybe I'll invite some other friends too! Hope to see you there!
Yours,
(numele tău)