What to include in an Army time in service memo for promotion?

E-3 trying to get promoted to E-4 commander said he will sign off on the memo but I don't know what I should include in it.|||It's a DA Form 4187 - time in grade as an E-3 would be one year. You need specific bullets to get promoted faster. Like how have you outperformed your peers and what specifically shows your knowledge skills and abilities.|||Memo? All he has to do is sign a DA 4187 to promote someone to E-4. And all he needs is the 1sg to put you on the Promotion standing list.