Drawing is an essential skill, it lays the foundation for almost every creative endeavor. The art express it is through line, point and stain in the art to create with this building elements is endless. Since your imagination is boundless, these combinations are limitless too. I have shown you only 10 of them to bring the gesture of the stroke into life, you have to apply the principle of light onto it. Otherwise, the stroke remains flat. I have shown you no matter what kind of stroke you use for creating when you manage to build the stroke accordingly to the characteristics of the light, you have gained the three dimensional appearance.
Now you clearly See how the gesture of the stroke impacts the drawing. It determines the expression, the atmosphere, the feeling of the portrait. Knowing this, you can properly choose the best way to the specific demands of the drawing object. Put this knowledge in practice. This is the only way to understand my words, learning by doing I wish you all success. Spread the beauty of art.
Thank you