I had cut many 5-inch squares and then decided they would be nicer and better if I sized or starched them.
Maybe I got them too wet, at any rate, when I ironed them they stretched a bit.
So - is there a "proper" way to use spray starch/sizing?
When I was a kid, the whole garment was immersed in the starch mixture - remember that little blue wax thing that was melted in it? - and then hung out to dry - don't remember if that just hand-wrung or put through the wringers again.