Mixed Reality experiences are powered by environmentally aware computers like HoloLens. These devices make the connection between a user and the space they are in. This fundamental shift to spatial computing requires that we adapt. Designers and engineers need to better understand 3D concepts so that they can take full advantage of an expanded canvas. What should we keep in mind as we approach this new way of building and using applications? What tools and behaviours are most useful in these endeavours? What are some of the common problems in Mixed Reality design? In this session, we'll answer those questions and more through an analysis of the development techniques employed at Microsoft Vancouver in the creation of Dynamics 365 Guides, which enhances learning with step-by-step instructions in real work situations.