Make sure all objects on your art board are assigned to spot colors.
Add any trapping if needed.
File > Document Setup to set your bleed margins if your artwork is full bleed.
Select any type on the page and go to Type > Create Outlines to outline your type.
File > Save As a PDF following thePDF export guides on this page. When exporting your PDF make sure that "Preserve Illustrator Editing Capabilities" is checked.
