I never thought of putting it in the freezer.
I never dry my fabric completely. I put it in the dryer to fluff and get out the worst of the wrinkles.
I use a spray bottle on tough to remove wrinkles and a good steam iron. I also use a light spray starch on the fabric to replace the sizing that's washed out. I don't like fabric shrinkage or bleeding after the quilt is made so I prevent them. Surprisingly I have more fabrics that bleeds from the LQS than from Joann's. So every new fabric goes into the washer as soon as I get it home. Then ironed and refolded before being stored by color family.
I tend to be in color moods when I shop. So lots of greens one day and oranges or whatever another. Mostly they can go in the same washer. I tie it in old pillow cases so it has less fraying. Every fabric goes into a dish tub of water for 10 minutes before it goes in the washer; so I can identify the bleeders and take action if needed.