Blender is a 3D render engine, but cartoons traditionally look more like 2D. Getting consistant lighting across irregular objects can be tedious, but there is a method that uses the toon shader, but leaves the lighting to the compositor. This way you can easily correct lighting artifarcts that stem from using multiple lamps that differ in distance or intensity. The talk is 2-part, in the first part we will have a look at the settings, scene setup and lighting for a cartoon scene. The second part will be about correcting the light, applying hatch textures and adding freestyle via the compositor.
So sorry for the late entry, but I just stumbled over this method and thought it would be worth sharing. Thank you for considering me, Frederik