mail to professor Is there any grammatical mistakes in the following letter which I'm going to send to my professor? Does it need any amendments? Dear professor XX; Back to our previous conversation, you gave me the opportunity to write a conference paper by comparing the results of experiments E5 and E7 from the doctoral dissertation of Dr. YY. As you are aware, I handed in a draft version of the paper within a week after your approval; however, at that time you ordered me to change some parts of the manuscript without exactly specifying them. After applying some changes, I've attached the revised script to this email. I understand that you are busy these days, but please let me know if it needs any amendments at your earliest convenience. sincerely; ZZ ****P.S. : I really need this email to be overly formal and without any mistakes. So I would appreciate any suggestions to improve the above script toward "perfection" :)