In the earlier chapters of this book, I have presented facet theory and mapping sentences in both their quantitative and qualitative formats. However, I have emphasised the traditional mapping sentence and quantitative facet theory research. In this chapter, I concentrate on more recent forms of mapping sentences and facet theory and provide a review and examples of qualitative facet theory and the declarative mapping sentence. To achieve this, I will consider the declarative mapping sentence in greater detail and then consider its application in a study into fine art that takes into account perceptual neuroscience and visual impairment. The study employs the declarative mapping sentence to allow the investigation of the modern art trope of the grid image through theoretically reviewing extant grid images. Uniquely, the mapping sentence then provides a guide for painting a body of work, which constitutes both the investigation and validation of the mapping sentence. Other qualitative uses of the approaches are also presented. The chapter ends with suggestions for future research.