Images aren't showing in the completed submissions

For any headers and text you would like included in the email notification, you would need to add them manually.  However, you can include the headers and text of your form in the PDF output of your submission data:

http://www.jotform.com/help/305-How-to-show-headers-or-text-for-contracts-terms-agreements-in-the-PDF-format-of-a-submission

Then include a copy of the PDF in your submission data:

You can create a form autoresponder so the user gets a copy automatically:

https://www.jotform.com/help/26-Setting-Up-an-Autoresponder-Email