Hi togehter,
when I am selling Lego ships (I buy them and sell them expansiver to finance my collecting hobby) I wrote in the text that I cleaned the sails and that they are now like new. And every time 100 persons wants to know how I make that.
Because of that I made a youtube video with my wife. It is nothing professional but it is enough to learn how it works.
German with English subtitles
German