You can choose to add gift message to your order fulfilled by Gearment. Gift message is recommended for your team as it is used as a marketing campaign or to bring an excellent shopping experience to your customers, boost re-sales rate for your store. It is charged $0.49/order if it is FBM order, and $0.49/item for FBA order (usually contains from 30 items).
See how to configure gift message for your store here
Please note that you have to configure gift message for your store and activate that configuration first and all the orders that attached to your store can be printed and shipped with a gift message.