This is a pillow cover for an 18"x18" pillow form, done in the traditional cathedral window style. It is largely hand-sewn to achieve the seamless effect on the top.
The white background material is high thread count muslin, and the color windows are quilter's grade 100% cotton, as is the back. I like to choose colors and prints that evoke a modern feel even in this very traditional style. All fabric is pre-washed.