456, X Street, Y Avenue,
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear Andrew Hall,
Enclosed is the draft of the contract for the franchise of FreshH2O Water Refilling Station. Those written in blue ink are the changes that I made. Most of my corrections are about the grammar and sentence structure. However, for the 3rd and 4th paragraphs, I feel that it still needs a little restructuring. It seems that the thought and purpose are not that well expressed. Kindly check if you can do some revisions on it.