We present the development and evaluation of an authoring system for image-based pedestrian navigation which lets authors take pictures and annotate instructions on the go in three interface variants. Results indicate that a freehand manner of photograph annotation is fastest, while authors strive toward visually pleasing annotation compositions. Categories and Subject Descriptors H.5.2 [Information Interfaces and Presentation]: User Interfaces—Evaluation/methodology, Graphical user interfaces (GUI), Screen design, Interaction styles General Terms Human Factors, Experimentation Keywords mobile navigation, evaluation, user-created content