Draw a circle, Connect your lines to each other in diamond shape, creating triangles pointing towards the center of your circle.
Focus on the shading aspect. Start from any end but remember way of light falling on face, Highlight the shapes according.
Continue Shading the shapes and don't forget about the darkest points and the lightest areas.
Here is the step where all the things need to be accurate & shaded according to the way of light falling on face.
Finally the final stage is here. This the crucial step among the others. Here the Final touch-ups need to done.
Now that you have learned how to draw faceted face. Keep practicing. If you also want draw like a pro, Then you must enroll to our Online Sketching Courses by none other than Sadashiv Sawant.