I agree 100% with tartan, that is the way to go. If you don't feel comfortable enough to do feather wreaths a "pumpkin seed" flower would also look nice in those squares. It is easy to quilt it is 4 arcs and the bow of all the arcs meet in the middle. So an arc would take up one half of the square. When they are all quilted it forms 4 pumpkin seeds that meet in the middle.