Fifth guideline Always ask a question to make it easy for your partner to reply even if, as often, there seems to be nothing to say. Ask about your friend's interests, plans, family, ambitions. Sixth guideline Keep a diary of your language learning. Mark all your achievements with a gold star. Ensure that your friend is also happy with his or her learning.
Last guideline Stop procrastinating.
I have drafted a model letter below. All rights reserved. Used under License.