I've designed 2 new letterheads for the upcoming Christmas letter writing season. Do you choose to do a letter instead of cards? These are digital files which will be emailed to you as a 8.5x11 pdf. You would print the letterhead onto the paper then print your letter onto the sheet. You can see all the options available here.
I designed this with fonts and colors.
This one features a Madonna and Child from Pixabay