Sure, I would be happy to explain, however, all of that is in my book and with the template that comes with the book to help you make one!  I simply posted an image, collapsing items for the visual.  OR you can purchase the actual word template for the BEST way to apply right on my site under Resources.  And I have blogs that explain the Candidate Packet, too, on my site.  The cover letter is Page 1.  The JD Profile is Page 2 and the resume is page 3, on. 
I hope that helps AND I hope you never, ever, ever apply with JUST a resume in the future.   Best regards, Dana