Данте характеристику Микуле или Вольге

Dear Michel,
I'm very glad to receive your letter.
You ask me about the phrase: Friend in need is a friend indeed. You see, this is a very famous proverb. And among almost all nations you can meet it. This proverb means, that one is your real friend only if he's ready to help you anyway. If he considers his interests more important, than yours, you should think hard about his devotion. 
Fortunately, I have no problems in English now, and that's awesome! Now I deal with English every day at school and try to improve it at home.
Michel, and what about you, have you any problems in English? This summer I'm going to have a trip in London, do you want to have any practice with me? And what way do you try to improve your English at home?
Keep me in touch, ...