Thank you everyone for your suggestions.. I did wash and dry my fabric today.. put it over the agitator... shook it out.. put it in the dryer.. took it out to keep it from getting too dry on the outside and not on the inside.. Worked just great.. It came out smooth, without wrinkles, and now it's ready to go on the back of a quilt that's been waiting!
I think a one of the reasons it came out so nice is that it's one of those very nice fabrics.. has body, is woven straight, and the dye is well set, so it doesn't bleed.. Over all I'm a happy quilter with a beautiful backing ready to go..
Thanks again for all your suggestions.. what a group!