With advances in immersive displays and gesture tracking technologies, many novel interfaces for musical and visual expression have been developed, which often explore combinations of audio and visual productions. One category of such interfaces is musical drawing, in which artists simultaneously produce both visual and sonic content. Since it deals with two different sensory channels, one of the main problematic is to find the right balance between the sonic and the visual aspects of a project. In this article, we regroup the existing 2D and 3D musical drawing projects and we propose a set of dimensions that can be used to describe them, namely: Expression Orientation, Required Expertise, Collaboration, Visual Replay Value, Audio Replay Value, Modifications, Mapping Flexibility, Mapping Structure and Degree of Immersion. Using these dimensions, we analyse the design choices, discuss technological and technical constraints, and establish perspectives for future work.