Use Adobe Acrobat Pro (this is a part of Adobe’s Creative Cloud Subscription). Find “tools” on the top menu. Select “Forms”, then “Edit”, and “Add New Fields”. This will allow you to create editable fields for your customers built right into your digital products. Note: you cannot copy and paste your fields throughout the document to add more than one editable filed.  Instead, select “Create Multiple Copies” to speed up the process. You will also be able to give fields multiple lines and make them rich text enabled so customers can change the size and fonts of the text.
This card has optional greetings: Merry Christmas!, Season's Greetings!, Happy Holidays!, Happy Christmas!, Happy New Year!, Have an Ice Day!, Thank You!, Celebrate!, Happy Solstice!, Happy Birthday!, Happy Belated Birthday!, Happy Anniversary!, Happy Valentine's Day!, I Love You!, Get Well Soon!, Congratulations!, You're Invited!, Come to the Party!, Just Saying Hi!, Thinking of You!, [No Caption]