A method for facilitating and enhancing computer-based authoring of gesture definitions that are useful in controlling a walk-around character and other systems using gesture controls. The method includes, during performance of a gesture by a performer, collecting sets of raw sensor data each corresponding to differing parameters of the performance of the gesture. The method includes displaying a graphical user interface with a graphical plot of each of the sets of raw sensor data. The method includes receiving user input identifying which of the parameters to include in a gesture definition. The method includes, for the graphical plots associated with the chosen parameters receiving user input defining a starting position, an ending position, a maximum value, and a minimum value. The gesture may involve movement of a performer's arms, legs, hands, head, eyes, and so on in a particular manner.