In the future, you can improve your technique by seeing more movies. I recommend Netflix because there are no late fees and you can always look forward to getting good mail.
I also recommend reading reviews AFTER you see a movie. This allows others to point out things you might have missed. You will see other points of view on the issues covered in the movie, and that can open your mind to discussion and other opinions. Sometimes you will like or dislike a movie, but you will not really know why. Reading reviews can help you see what the deciding factors were and help you articulate them. You will be a wiser moviegoer for it.