STEP 1: Open the template file in Adobe Illustrator (version CS and above).
STEP 2: Use [My Artwork] layer to create all your art.
STEP 3: Outline all Fonts. Go to Type -> Create Outlines.
STEP 4: Delete the Instructions layer before creating PDF.
STEP 5: Save File as Press Quality PDF and set Standard as PDF/X-1a:2001.