Orders in a status of "Deposit Required" or "Balance Due" must be paid before they can move forward.  When viewing the order, you should see a green "Make Payment" button on the top-right of your order (see below):

In this example there is an Amount Due of $319.20

Click the "Pay Now" button to initiate the payment process.  The next page allows you to enter your preferred credit card information:

Click "Submit Request" to process payment.

The Status of the order now moves into "In Production":

The payment is also posted to the messages tab so everyone is aware:

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