Dear Hanyang,
I have received your letter.I could undestand your feelings.Then you don't worry ,because I will help you.Here is some advice for you.
Firstly,the appearance is not the key.You should build confidence,since everyone is equal.Secondly,you should tell them your thoughts that you want to make friends with them.For example,you could talk ,play,and study with them.what's more,you need show your sincerity.Thirdly,you don't be short-tempered .
You should believe you must do it.As an old saying goes,"A true friendship should stand the test of time and hardship".Best wishes to you!Come on,girl!
your sincerely
Wanglei