A comprehensive movie review is one that points out the various aspects of movie making and how those aspects are used to create a mood and tell the story in the movie being reviewed. A reviewer should understand how lighting affects a movie, how different camera angles are used to create different moods, how action should properly be shot and what makes for a good story. There are common elements to every good story; the way to gain experience with all of these aspects of the movie industry is to watch a lot of movies and do a lot of research. People reading movie reviews are looking for insight into how the movie tells the story and how it will affect them when they watch it; the best way to get that across to a reader is to understand how movies are made and what people commonly look for when watching a movie.
A movie review can be done on a personal level or a professional level. On a personal level, the reviewer outlines how the movie tried to use various devices to create the story and whether the movie succeeded in getting its point across. The reviewer is drawing on how the movie made them feel personally, but they need to elaborate on those feelings with reasons why they think a movie was well done or not. In a personal review, it is not enough to simply say you liked or did not like a movie, there needs to be information on why you did or did not like a movie for the review to mean something to a reader.
Some reviewers prefer a more structured approach to their reviews; they basically fill in a template when they write their review. They focus in on character development, acting performances, how the movie was filmed, the story and then their final grade on the quality of the movie. A structured review is sometimes easier for a reader to follow and understand, but it can also lack the ability to get the reader involved in developing an opinion about the movie. When writing a review based on a structured template, incorporate your own feelings about the movie to help the reader better understand the effect the movie had on you.