What is a "personal letter"? Please note that we don't do your work for you. Try to write the letter yourself first, post it here (or in the Editing and Writing Topics section) and then we will comment on it. If you look at the top of the screen and find the word "Resources", you will find "Letter Writing" in the list. Read that first.
I saw about "Personal letter" when I searched "Open position" in some university website for apply.
First I am going to find "Letter writing" and read it then I will send it for you.
Thanks.