Here are three web site links on how to write your own tract:
http://www.pursuechrist.com/Write%20Your%20Own%20Tract.html
http://www.atstracts.org/printpage.php?id=14
http://www.atstracts.org/readarticle.php?id=14

If the links don’t work, please try finding them on the home page of
http://www.pursuechrist.com
and
http://www.atstracts.org/