Correção de texto: Friendship

Hy guys,this is a TOEFL question and I'd like to be corrected,please.
Choose some personal characteristics that you look for in friends and explain why these characteristics are important.Please include specific details in your explanation.
Answer:When it comes to friendship,the traits that I appreciate most are loyalty and good humour.It's aways good to have someone close to you that you can count on whenever you need him,a person who is thick and thin to you.A good friend is also the one who displays a good mood,that means,someone who makes you laugh,who cheers you up when you are down.Surely,in order to have good friends,we also need to be good friends because a valuable friendship is made up by mutual trustness.

This is my answer,it is very raw because I try to answer them as soon as I come across them,because in exams such IELTS and TOEFL we don't have much time to think.So guys,what do you think about it?I'd be glad if you also send more two or three sample answers to this question.Thanks in advance!