Before you click "Submit"...
Try to keep your book reviews looking clean and simple. It doesn't have to be perfect, but try to focus on your grammar being aesthetically pleasing. You can do it any way you prefer, but if you're willing to choose, we'd prefer if you did your review in a specific process--a little bit about the author, maybe yourself, the mood and setting of the book, an introduction to the characters--all that sort of stuff. Definitely do warn the reader of spoilers at the beginning of your review in case you end up re-writing the plot summary.