I have a dress, knee length, pale sage green, which has a chiffon top layer to the skirt. I am wearing it to a ball tonight. Noticing about five tiny marks on it, I carefully sponged them off, and used hairdryer on low heat to dry. Marks have gone, but left a worse water mark, much bigger than original tiny spot! Oh no!! What should I do? Dip the whole layer in water and dry? Panicking!