A Thank you Letter to Mr Dave Paterson

Write a thank you letter to Mr. Dave Paterson, in which you thank him for coming to give the guest lecture as well as reflecting about; “any business we have to mistake and learn from our mistakes and that if we don’t make mistakes we are not learning anything”; It’s the best part of the lecture and try to add more details.
a) Write a properly formatted letter
b) Use full sentences vs. point form
c) Show care in your work / convey authenticity or sincerity to him in the letter