When sending artwork, do not send extra files, like proofs, mock ups or samples, because they might get printed. Only send the files you need printed.
We are not responsible for these kinds of files being printed. Unless requested by one of our employees, DO NOT send files that you do not want printed.
If you need more information, have additional questions or just can't find the answer to your question here, please submit a support ticket and one of our account managers will be happy to help.