VECTOR or MATRIX

Vector files scale infinitely, while matrix files are pixelated when enlarged.

CMYK or RGB color mode

Files must be in CMYK or PANTONE mode for print.

The RGB color mode is reserved for screen display rather than printing.

If you send an RGB file, it will automatically be converted in CMYK and you will note a big difference in color between desired screen color and printed document.

BLEED

If your document has a color background, you must make sure it exceeds the document's final format (bleed) so as to cut into the color and prevent a white contour.