Have you thought of using the paper piece method?? If not, I would draw the stitch lines and dots where to stop since you will have inset seams. With the smaller ones. cut some plastic hexagons the finished size. I made these (the purple I didn't get the basting tight enough). You just do a basting stitch to gather and tie it in a corner. Press it at very low heat, pop out plastic template and applique it to your center. Cute design.