Valerie Alexander, screenwriter and author, shared advice for making a video trailer based on her experience doing this for her own book. Her article has plenty of good advice, and one nice thing to know is that you don’t need a studio to pull it off—she made hers using an iPhone. You can find her article at the link below:

http://buildbookbuzz.com/how-one-author-created-her-funny-book-trailer/