I make my own cornstarch mixture so I can be generous. I put my
fabric in a bucket, pour the mixture a little at a time until it gets
everywhere. Turn the fabric over/under a few times to make sure
the starch is evenly distributed. After 30 mins I let it air dry until
it's damp then iron with a cloth on top so my iron doesn't stick.
When it's almost dry then I remove the cloth and finish ironing.
Oh and now I have a handy dandy rack to drape my fabric over
so it's not on the floor. :-D