Without wishing to whinge, I think it is very important to be prepared to give as well as take i.e., in terms of time, effort etc. So make sure you actually offer to help them learn your native language and not only practice your English! Good luck!

share your knowledge with your friend and try to learn from each other, and learn while having fun =) direct chat with microphone would be very nice too.

Be open minded and friendly ^_^

First it is nice to be friend. Of course, is good participate in written an chatting too, with respect.