Once your student has gathered more than enough useful information on the subject, it's time to start organizing the rough draft. Have your student arrange all of the notecards according to where they fit in the outline you created earlier. Get all the 'I A' cards in a pile, then 'I B' and so on. Once the notecards are in order, then make sure your student understands about plagiarism and the school's policy concerning it. As long as the source of an idea is properly credited, they should be okay.
Instructors are more concerned with a student's original thoughts being their own.
Some desperate students have been known to buy their papers from an outside source or will approach unscrupulous English tutors for even more 'assistance'. Do not jeopardize your future tutoring career with such offers. Simply encourage your student to connect the notecard information with some original insight. A rough draft is meant to be unfinished and unpolished, so assure your student that mistakes can be fixed at a later date. Resist the temptation to overcorrect a paper with your own thoughts.