UPLOAD SUPPORTING ARTWORK
This feature allows you to attach to this order -- EPS files (preferred) and/or high-resultion versions of your logo and/or other artwork.

Typically, you would only need to use this ‘Upload Supporting Artwork’ feature if the proof shown above doesn’t look right, e.g., background color is wrong.

If your proof doesn’t look exactly correct, it may be because of the background color of your uploaded graphic. If this is the case, please upload your vector artwork (EPS files with all type converted to paths) or high-res raster artwork, e.g., TIF, BMP, PSD, SCI, TGA, PCX, etc.

Also see Artwork Hints.