I am a believer of wet cleaning. Soak flat in tub w warm water & shampoo for 30 minutes. Brush the collar and sleeve ends with soft brush. Press with bear foot while it’s staying flat. Rinse w shower. Apply conditioner and rinse again. Soak in fresh water for another 30 minutes. Laying flat on beech chair and fan blowing dry. finishing with a sun bath. Iron with a cotton r shirt on top of coat. Came out great .wet washing will get rid of 90% of wrinklesIs the best way to clean these peacoats just to take them to a dry cleaner? Anything you can do about a lumpy lapel? Lay a book on it?