Andrew Jack is a British dialect coach who has worked on over 80 motion pictures since 1982.
He has worked with over 200 actors including Robert Downey Jr, Pierce Brosnan, Cate Blanchett and Viggo Mortensen. source
All artists are people of growth. It's like food you take the good and leave...
Put the uncommon effort into the common task... make it large by doing it in a great way.