When laundering doilies or other linen pieces that need careful shaping, leave unstarched for the first ironing. When ironed and shaped to your satisfaction, dip a thin cloth in starch, wring out and smooth it over the article on the ironing board, then iron both layers dry. The doily will be nicely starched and finished.
Have you tried this? Not quite so sure it’ll work that well now that we have handy spray on starch.