For someone to develop a style they have to be allowed to experiment, no matter how painful it is for the people that know how to do it "the right way". I go through this constantly with my children, I think they should "know" how to do something or they should do it the way I do, it is very hard to allow someone to grow at their own pace.
in reply to Adult learning problem
By watching others learn you learn as well. You learn how they approach problems, this is very important if you are going to modify or correct a certain behavior/action. You need to first see it through their eyes instead yours before you can best advise them.