How do I affix my photos to the application for a passport book renewal?

Question: I am sending in my application on Monday January 25 via Federal Express at the end of the day and would like the answers to the questions above:

Source: http://www.us-passport-service-guide.com/how-do-i-affix-my-photos-to-the-application-for-a-passport-book-renewal.html

united states passports online passports us passport application