Hello everyone.(since this is an self introduction,you'd better first provide some information about yourself)
This is my best friend HJH.This my best friend HX.(you can't have two best "friend".you can say "this is ...,and this is .they are two of my best friends")
Three years ago,we met in the same class （in this class).Today we still get togetheer.( are together)
HJH is very friendly.She often helps me.If (when)I get into trouble
she often gives me a hand.When I feel sad.(,)I often chat with her.She often makes me happy.
HX is very helpful.She often helps me to (不要to) learn English.She is the best listener 听我诉说快乐与悲伤.(of my happiness and sorrow).
We all like pop music.Lee Hom is HS`s favourite singer (HS is a fervent fan of Lee Hom).RAIN is HJH`s favourite star.If we are free ,we will go shopping or go skiting
与你再一起让我感到很充实 (to be with you alone makes me content)
I must 珍惜(cherish) our friendship.
I think we will have more friends in class nine.
写得不错,加油!