(Paragraph #1) Summarize the story so far. Talk about what has happened without giving your thoughts or feelings about it.
(Paragraph #2) Talk about who your favorite character in the story is so far. Explain why. Talk about all of the characters so far, their development, and where you see them going in the story.
(Paragraph #3) Share your thoughts on the story. Do you like it? Is it really good, average, bad, what do you think? Be candid, but also tactful.
NOTE: If you haven't already begun reading, start reading now. Then, after 30 minutes or so, post your thoughts.