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 please send us your order number and the message you would like to add to the following e-mail address.
Customer Support: info@musubikiln.com
-Shipment details-
We are looking forward to hearing from you!