I made a grandmothers flower garden and made the hexes by the one stitch in a corner method. I got lazy and finished with a basting machine stitch around. But now I am older, and wiser, and I have graduated to to the elmer's washable school glue, dot in the corner, heat set with a small iron method on my latest project.
With all the hexes you are doing on these beautiful star quilts, I hope you try this quick method. Keep showing pics of your beauties......Jane