This is the result of multiples experimentations around bezier curve. The technical basic of the project was to build a shape around a main bezier curve, and to populate it.

Firstly, a main curve is built, then, a shape is calculated from the main curve.

Afterward, and iteration process slowly around the leaf curve and makes branched connection between the main curve and the curved shape.

The populate process use random number,
in order to select if the space between the shaped curve and the main leaf curve stays blank or not.

Then the process add multiple leaf structures, the number of layers is driven by a parameter.