Volna uses two masks to make blending shapes and colors. You can blend masks with a different shape into a new shape. Volna will crete a morph of the two shapes using strokes or dots.
The stroke can be narrowed or thickened towards the end
Arrows at the ends of lines can be fine-tuned and animated
With the help of distortion, you can achieve the effect of "freehand line", "chalk drawing". You can also animate the distortion to bring the drawing to life