Holistic assessment is an evaluative approach in which assessors work backwards from an overall appraisal of work to determine the criteria relevant to individual student responses. One of the strongest proponents of this approach in higher education is Royce Sadler, whose theoretical contributions over recent decades provide a strong conceptual rationale for holistic assessment. While Sadler's contributions are well renowned, few explicit accounts are available of Sadlerian theory in practice. The purpose of this reflective paper, as such, is to explain how we have attempted to synthesise and apply a Sadlerian theory of holistic assessment design in one of our own courses. Our intended contribution is to provide a relatively concrete interpretation of holistic assessment design which may serve as a point of reference for assessment design in higher education coursework.