Here are the steps:
I took my seam ripper and ripped the seams in the bottom right corner about 3 inches long.
I opened it up and filled it with some leftover polyester stuffing. If you have an old throw pillow you don't use anymore you could always cut it open and use the filling out of it. I'm all about using what you have on hand.
I stuffed it until I was happy with the fullness of it.
If you're a rule follower you can seal the opening back together with this product. It does a great job but takes a little bit longer to dry. If you use this product you might want to take some clothes pins to hold the opening shut while it dries.
Or if you want to get the job done fast you can heat up your hot glue gun and seal that baby up in seconds. Because this is a Christmas pillow that wouldn't get much use I decided hot glue would work fine. If I was making this pillow to be out year round I might stitch it by hand or use the above product.
See...nobody will ever know you used hot glue!
Now I have an adorable pillow made from a $5 placemat. These colors sure do make me happy!