One of the first wall hangings I made I had the iron too hot and it made the puffy polyester batting go flat. I just finished ironing the hanging and it's flat all the way through the item. Some day I want to take it apart and use warm & natural. I use warm & natural now on everything. Learned my lesson on that. I don't know what I'd do with a full sized quilt tho as that probably would be too stiff and unnatural looking. On the wall hanging no one knows! I like Lindy - 2's idea of putting a piece in that area of the same batting.