Center the template onto the wrong side of fabric.
Trim to within 1/4" all the way around.
Fold over and finger press one straight edge. Apply a schmear of glue to the point of that edge.
Fold over and hold in place the next straight edge.
Continue with glue basting until all edges are turned. Turn hexagon over and heat set with iron thus eliminating the step of hand basting the edges.
This completes one of your hexagons. I make up a bunch at a time.
And store them in a safe place.