Here is the pattern for my tree skirt. I started with 10" squares of fabric to make my triangles from. A bunch of half square triangles, 4 squares for the corners and 2 triangles pieced into a large triangle for the mid-side points. Don't sew the seam between the blocks where your skirt slit will be. After you quilt it however you want cut around a bowl for your center hole and cut your slit in the batting and backing. Add your binding with some fabric strips or ribbon for slit ties. And VOILA! your tree is complete. Enjoy!