Quickly I need your help

hello,

I have test next Sunday date 21 / 10

And I need some help you in writing because I do not know this:


The first writting about: A formal letter (to a language school)


Including: 1- Greeting 2- Introduction 3- Personal information 4- Experience as lerarner 5- Formal ending.



The second writing: An informal letter (to a penfriend / relativce)


Including: p.1- Greeting p.2/3/4- Information about yourself p.5- Informal ending.


please, help me I do not know how to work it ... I want that to exam