Ironing velvet can pose problems. There is something called a needle board that can help keep the nap from lying down when you iron it. Maybe some of the newer velvets don't do it. I remember going to a high school semi formal, with a guy I didn't know very well. We danced, and the usual high school stuff. After the dance I took a look at my dress, a red velvet top with a pleat in a white fine fabric. Anyway, on the back of my dress there was a handprint where he had held me while dancing. I guess he steamed it into the dress!