If you want to improve your English. You should be able to say, as many would say. You should be looking for an opportunity to listen to the sound of movies in film and writing a letter every day.
If you want to improve your English. You should have said as much to say. You should find an opportunity to listen to movie soundtrack and wrote daily.
If you want to improve your English? You should speak as much as to say. You should have the opportunity to listen to the movie soundtrack, and write letters.