Your arguments should develop the thesis in a logical manner. That logic, unlike more standard academic writing, may initially emphasize the author’s argument while you develop your own in the course of the review. The relative emphasis depends on the nature of the review: if readers may be more interested in the work itself, you may want to make the work and the author more prominent; if you want the review to be about your perspective and opinions, then you may structure the review to privilege your observations over (but never separate from) those of the work under review. What follows is just one of many ways to organize a review.
The purpose of a narrative report is to describe something. Many students write narrative reports thinking that these are college essays or papers. While the information in these reports is basic to other forms of writing, narrative reports lack the "higher order thinking" that essays require. Thus narrative reports do not, as a rule, yield high grades for many college courses. A basic example of a narrative report is a "book report" that outlines a book; it includes the characters, their actions, possibly the plot, and, perhaps, some scenes. That is, it is a description of "what happens in the book." But this leaves out an awful lot.