If you will look through the link the Luigi provided for you, it contains the instructions for completing your CFA and instructions for who can administer it as well as instructions for the person administering it. The actual form that you submit is online. There is also information about Dodmerb, etc. in that link.
Once your status changes to "Candidate" all of this information will be online for you to access--on the same page that you are now seeing as "applicant" or "competitive". If you just recently completed the pre-candidate application, it may take a few days for them to evaluate you and for you to be an official candidate.