I recently started the practice of starching twice. Got the tip from Sharon Shambler web site. What a difference it really makes in keeping the fabric under control, especially for those bias cuts.
One thing about starch is to let it soak into the fabric for a minute or two before pressing to let it soak into all the fibers.
I make my own starch ( Niagra Liquid) and mix it to a medium blend, according to the directions on the bottle.
peace