Dear {Driving Instructor},
Thank you for helping me pass my driving test with flying colors. It probably sounds weird, but I will miss my lessonsâI looked forward to them {every afternoon/each week} and really enjoyed our chats.
Not only did you help me get my driver's license, but you also taught me how to be a safe and responsible driver. I will definitely recommend you to my friends who are looking for a driving instructor.
Sincerely,
{Your Name}