Step 1: The color of the sky is particularly beautiful, and it is particularly important to choose a good color. It is roughly blue-purple-pink-light yellow from top to bottom. The direction of strokes should be unified, and the picture will be coordinated.

Step 2: The distribution of clouds is random, so don't draw them too symmetrically. The cloud above the picture is the darkest, and the one near the city is in the distance, and the color is lighter. Sprinkle white paint or white lead to draw the feeling of stars.

The third step: the high-rise buildings in the city are relatively dense, and the reality of the city is only shown in the case of uneven height. Similarly, the farther the tall building is, the lighter the color is.

Step 4: Dip the light upstairs with a very fine pen and paint it with white pigment, then sprinkle with white pigment or white lead powder to deepen the image of the starry sky.

Step 5: Finally, tear off the paper tape, and a picture about the purple starry sky is finished.