INTRODUCTIONMany scholars rise in academic reviewing structures, moving from ad-hoc reviewers, to editorial board members and then to associate editors or editors of reputable scientific journals. In the process, some scholars do not learn to become great reviewers. Consequently we offer four actionable guidelines to help reviewers transform from good to great. First, however, we describe the baseline for 'good' reviewing: the necessary elements of good reviewing and some 'composition-related' features of good reviews.