Option 1: (Preferred) 

If your files are ready, submitting your files now will streamline the order process.  Select the Add File button

Option 2:

If you are not ready to submit files, select the Continue to Checkout button.  You can upload the files when ready through the Order History tab of the My Account.  Order will be placed on hold until the order has files and payment. 

Acknowledgement Required: To activate Continue and Add File buttons, please scroll to bottom of window above and check the acknowledgment checkbox.