Prompt for Video Generation: "A step-by-step tutorial video on how to draw a portrait. The video starts with the basic steps of sketching the outline of a face, showing a person lightly drawing an oval shape for the head. The narrator explains how to place key facial features, such as eyes, nose, and mouth, with emphasis on proportions and alignment. The artist then adds details, shading the eyes, nose, and lips, demonstrating how to use different pencil grades for light and shadow. The tutorial also includes techniques for blending and adding texture to the hair, with close-up shots of the pencil strokes. Finally, the artist reviews the completed portrait, giving tips for final touches and refinement." This can serve as a good foundation for a video tutorial, highlighting each essential step in the process of drawing a portrait.