Here are the steps on how to draw a stick figure portrait:
Determine the basic shape: First, draw a circle as the head, which will be the center of your canvas. The size of this circle will determine the size of your character's head.
Add the body: Starting from the underside of the head, draw a slightly elongated rectangle, which is the body. The length of this rectangle should be slightly greater than the width to present the figure's body.
Depict features: On the top of the head, draw two small circles that represent the eyes. Under the eyes, draw an inverted chevron shape, which is the nose. Under the nose, draw a curve, which is the mouth. These features should all be symmetrical to the center of the head.
Draw the limbs: On the sides of the body, draw two slightly curved lines, these are the arms. Under the body, draw two slightly separated and slightly curved lines, these are the legs.
Refine features: Add pupils and highlights to the eyes. Add lips under the nose. Add fingers and toes to your arms and legs.
Add details: You can choose to add some details to your character's clothes, such as pockets, buttons, wrinkles, etc. It is also possible to add some details to the character's hair, such as split ends and curves.
Finish the drawing: Now that you've finished with a simple stick figure figure. You can adjust the size and shape of your head, body, limbs, and other details to your liking.
The above steps are a guide on how to draw a stick figure portrait. While these steps are basic, they are fundamental to learning how Xi paint portraits. By practicing these steps, you'll be able to gradually master how to create impressive stick figure figures with pen and paper.