Since I do not have SQ Muscovies, ( although my white duck might stand a chance at an exhibition) I will provide you with a link from the web:
http://images1.dhd.de/82504882.jpg . This picture merely shows the face, but I think this is the most interesting part for the moment anyways
Here in Germany, it really depends on the breed and whether extremes are desired or not. Sadly, there are breeders who like balloon croppers or crested ducks with large crests or homozygous silky barbary doves or other breeds with traits that cause suffering.