Please ensure your artwork preparation inorporates the following :
► All fonts are included and/or outlined.
► Artwork includes 3mm bleed and trim
► Artwork size matches specified dimensions.
► All linked files, images, and fonts are placed in separate folders.
► Colour mode in CMYK
► For Full Colour (CMYK) printing, all spots converted to CMYK - ie: there should be no spot colours in the artwork.
► If dielines or creaselines are included in the artwork, ensure these are set with a spot colour (which is not used in your artwork), and have been set to overprint stroke.