Watch a variety of quality films. If you want to critique films, you need to know what makes a quality film. Look for critically acclaimed films across all the different genres, and watch them. Consider classic films, indie films, foreign films, short films, animated films, comedies, and dramas. Be sure to watch as many “classic films” as you can--film critics often reference these. Search “classic films” online to find a number of lists. Purchasing a subscription to a streaming service like Netflix is a great way to get access to a wide variety of films.