My review format is fairly simple, and an example review can be found here.
Synopsis – summary of book
Why I Picked It Up – why I read the book
What I Liked…And Didn’t Like – self explanatory
You Should Know – questionable material in the book (language, violence, drugs, intimacy, etc.)
Who I Would Recommend it to – which genre lovers would like this book
Final Grade – I will either give the book an A, B, C, D, or F, and explain why
A DNF (Did Not Finish) review is only differs in the fact that it is shorter, and it includes why I stopped reading it.
An example can be found here.