I have a really cute snowman fabric that I want to cut into squares and alternate with plain, brightly colored squares. I want it to be 2 layers thick. I'm thinking of cutting the squares then sewing a 1/2" seam through 4 layers of fabric, stopping 1/2" before the end of the fabric (does that make sense?). I DO NOT want to tie the edges, I want it sewn. Has anyone sewn a fleece blanket like this? Any tips?