Drawing annotations with 3D hand gestures in augmented reality is useful for creating visual and spatial references in the real world, especially when these gestures can be issued from a distance. Different techniques exist for highlighting physical objects with hand-drawn annotations from a distance, assuming an approximate 3D scene model (e.g., as provided by the Microsoft HoloLens). However, little is known about user preference and performance of such methods for annotating real-world 3D environments. To explore and evaluate different 3D hand-gesture-based annotation drawing methods, we have developed an annotation drawing application using the HoloLens augmented reality development platform. The application can be used for highlighting objects at a distance and multi-user collaboration by annotating in the real world.