This blog isn’t about writing book reviews. As the name implies, it’s RAW notes, i.e. unpolished, unfiltered, written-under-no-pressure. For book reviews, you might want to refer to the following instead:
Indiana University
St. Cloud State University
Queen’s University Library
Dalhousie University Libraries
College of Staten Island Library

Incidentally – Difference between Book Reports and Book Reviews

Strange though – I can’t seem to find any Singapore pages on how to write book reviews (in stark constrast to overseas libraries and academic institutions). I’ve just suggested to my colleagues that NLB ought to have something at the very least.