Unfortunately, we don't offer any message card service. However, we can put your message on the MEMO column of the "Shipment details" sheet, the only document we include in the package.
Please refer to the following sample, and send us your order number and the message you would like to add to the following e-mail address.
*Please note that due to our warehouse system, we cannot modify your order/shipment information(including adding your message) once the order has been packed.
Customer Support: info@musubikiln.com
-Shipment details-
We are looking forward to hearing from you!