Modify my existing PDF code on my PHP site (sbpdf)

We have an existing PHP site with a MySQL database. Part of the site is coded already to create and email a PDF version of one of the PHP pages. I'm not happy with how the PDF is laid out and need someone to modify how it looks and perhaps take a closer look at how it's put together. Please read the attached document for full details and instructions, and feel free to ask any questions. You will be given full FTP and Cpanel access.