You will need to submit your final draft of the second and third papers to turnitin.com.

For instruction on how to use the site, go to:

 http://www.sfu.ca/acs/plagiarism/turnitin.htm

and follow the procedure.  The email address and phone number for technical support are provided on this page (contact the support listed there to answer your question, not your TA or Dr. Tiffany).
 

Please Note: you can only submit one essay once! Do NOT submit “test cases,” but only submit the final version of your essay.