Read current online movie reviews written by the most highly-rated critics to get ideas about how to structure your online movie review. A great place to start is the Movie Review Query Engine. This site offers an array of movie reviews written by independents, as well as those written by more widely-known critics.
Search out the latest films at the box office or the most newly released dvds. This information is easily found at websites, such as: DVDFile, Amazon, Netflix, or Rotten Tomatoes. By writing about new releases, you are assured that others will be interested in the films you review. This gets your online movie reviews noticed, giving you greater visibility and more rankings.
Go to the cinemaplex or rent the dvd you are interested in reviewing. When you first start writing online reviews, it is best to write about movies you actually enjoyed. It takes more skill to critique movies you find less than enjoyable.
Write some mock-ups or drafts of your movie reviews before putting them online. Keep your reviews at less than 400 words, avoid spelling errors, check your facts (i.e. director's name, actors' names) and reference them in the review.
Give your honest opinion! That's the reason people read reviews. They want to hear what reviewers truly feel about the films they're interested in. So, tell them your thoughts about the acting, the direction, the cinematography, the flaws, the strengths of the film. Be straightforward and concise.
Tell readers what the movie is about, but try not to give away plot details. If someone gets the whole plot by reading your review, you've told them more than they need to know. Keep it simple.
Join an online community that accepts and publishes "user" reviews. This is the easiest way to get your online movie reviews seen and ranked by a large number of people. The best place to start is at Amazon. All you are required to do is get a user name, user ID, and password, and you're on your way to becoming an online film reviewer. There are many other online communities where you can put your online film reviews. Just a little research, and you could be the next Roger Ebert!