Ensure the file matches the product's required dimensions.

Ensure that the artwork is created in CMYK 300 dpi with 1/8 inch (0.125") bleeds on all sides.

Make sure that all images are embedded, and that all the text is outlined and 100% Black.

Ensure that all text is minimum 1/4 inch (0.25") away from the edge of the sheet on all sides.

Export all files into PDF format with bleeds and cropmarks.