This is a PDF download painting pattern which you can download after checking out from your confirmation page.  Pattern includes photos, supply list, text instructions, and line drawing to trace.

3 pocket ornaments with Santa, snowman, and gingerbread ... shown painted on oval ornaments that are approx. 4"x5-1/2".   You can paint on any surface of your choice.

WoodpeckersCrafts.com have some 4-1/2"x6" ovals that should work.

DecoArt Americana Acrylics