1. The upper and lower eyelids are attached to the eyeball, so be sure to draw the impression that the upper and lower eyelids are wrapped around the eyeball.
2. The projection of the upper eyelid on the lower eyelid cannot be ignored, and the changes in the shape of the projection, such as the square circle, virtual reality, and depth, should also be explained clearly.
3. The contour of the eye is not a simple arc, it also has subtle turns, virtual and real, square and circle changes.
4. The thickness of the eyelids should not be treated as a line, but should show the change in depth from side to side as shown in the figure. At the same time, the top surface of the lower eyelid forms a narrow light-receiving surface, and the light-receiving surface also changes in brightness from front to back.
5. When the top side light, the top of the black eyeball is usually slightly heavier than the bottom, and the outer circle of the black eye can not be hooked with a black line, pay attention to its virtual reality and depth and other changes.
6. The pupils are the blackest, so be sure to be black when portraying.
7. Determine the shape of the highlight of the eye according to the light source: If the light source is a tube lamp, the shape of the highlight will be a long strip; If the light source is a light bulb, the shape of the highlight will be a dot; If the light source is natural light from outside a window, the highlight may be the shape of a window. Also, if the highlight is a long bar, it should not be drawn straight, and its shape will change as the sphere of the eye turns. At the same time, there is a certain variation in the intensity of the highlights.
8. The orientation of the eyes should be the same, the position of the iris should be compared to the left and right, and the white part of the eye should be changed in size.
9. The brow arch is shown by a clear and soft line between light and dark, which appropriately explains the direction of the eyebrows.
10. Reflect eye volume by representing upper and lower eyelids and eye bags.
11. Because of the relationship between the front and back positions of the two iris, the tone of the near iris should be strengthened, and the distant iris should be blurred to form a pair
