I pre wash all my fabrics,dry in the dryer and press when I'm ready to use them.
As soon as I take the last stitch on the binding, I wash it in the washer and dry in the dryer. Use warm water, agitate a few minutes, let soak, let agitate a few minutes, let spin and rinse normally. Dry on low and turn every few minutes. Spread on my glass topped dining table to make sure it's dry overnight.