I hope this letter finds you and your family in the best of health. I am writing to tell you about my recent exam result.
I got my exam results yesterday; they have improved a lot from the last time. Your tips really helped me a lot. I got really good marks in English and Social Science and have improved a lot in Maths and Science. I will continue to work harder next time.
I am waiting for you to visit my home so that we can celebrate properly.
Your loving friend,