I realize that this isn't quite a beginner pattern, but I need a place to post this tutorial, so here it is. :) Pattern and yardages are for a 20" pillow insert. This is an envelope style pillow, so no zippers! PRO PILLOW TIP: For 20" pillow insert, your finished pillow cover will actually work out to about 19x19. This ensures that your pillow is nice and plump, even in the corners! FABRIC: For this pillow I am using Katerina Rocella 's new Mediterraneo line for Art Gallery Fabrics . I have chosen to use 5 different contrasting fabrics for the front and a large scale pattern for the back. In addition to fabric you will need: 2/3 yards of batting (your choice. I actually used two scrap pieces of white felt yardage and seamed them together because that's what I had handy. I also use warm & white from Joanns.) 20x20 pillow insert (see below) I highly recommend a down filled (or down su...