I was practicing on some squares with quilting I might want to use on the finished quilt. The fabric had been prewashed as well as the backing. Used Warm and Natural batting just for practice. I put these in the washer and dryer to see what would happen. The result was a wrinkled look which I do not like, not the old fashion look, but a mess. I always use Quilters Dream Cotton, but have never washed anything with it.

Should the batting be prewashed to preserve a smoother look?