This document outlines an agenda and content for a workshop on mobile prototyping essentials. The morning session discusses what makes mobile UX different than web design and includes exercises on identifying customer needs and ideating concepts in context. The afternoon focuses on mobile prototyping, with exercises on storyboarding, translating graphical interfaces to natural user interfaces, and creating in-screen prototypes. Throughout, the workshop emphasizes designing for the unique aspects of mobile by focusing on needs rather than solutions, understanding context, and allowing interfaces to "speak their power" through ruthless editing.