Most of the time I'll paint my paper mache pieces with a simple acrylic paint. It usually takes me two coats to get a nice, even coverage.
Of course most things I make aren't complete without having some glitter added to give it that Christmas sparkle. This is one application when I use my simply glittering method. Forget dragging out the messing glue and glitter. I use the spray on hair glitter that I purchase on sale after Halloween and give each letter an even spray. Let it dry and your letters are all set.
I've got plans to incorporate a few more words this year. Here are a few other words to consider.
Joy ~ Peace ~ Ho Ho Ho ~ Noel ~ Jolly ~ Merry ~ Yuletide ~ Comfort ~ Tidings ~ Wonderland