Did you sew down the middle of this row from beginning to end OR did you just tack each center flap with just a few stitches, break thread and keep tacking center flaps down? These are Very Great Pics for each step so far, but I'm not understanding how you sewed down the center flaps "points in the middle" of the block as you called them. Thank you for your Help with this instruction b/c I'm really eager to make one of these with the batiks just as you have - IT'S BEAUTIFUL....