Method 1:
First, we draw a big moon in the upper left corner of the paper and a big wavy line at the lower end of the paper.
Then we draw a lot of random small circles on the big wavy line and draw a transparent glass bottle in the middle of the wavy line.
We simply decorate the starry sky, draw five-pointed stars, large and small, staggered, and then draw more stars to cover the picture.
At this step, we can't find enough things to see where it is empty. We can also fill it with some dots. We drew some fireflies near the glass bottle.
Finally, we color it, preferably the whole picture is painted blue, and I gently paint the dots with crayons, and it's finished.
Method 2:
1. Splash method: First spread a deeper background color, then adjust a thicker layer of white or yellow, and sprinkle it on the drawing paper by splash method. Pay attention to cover the non-sky part to avoid color splash.
2, salt spraying method: first spread the background color with a lot of water in dark color, and then sprinkle salt particles at the right position with salt spraying method, and after drying, it will be a star. Note that the background color should be wet and dark.
3. Oil-water separation method: first draw some stars in the sky with oil pastels or wax, and then spread the background color with wet paintings. Pay attention to the background color to be a little more moisture, not too dry and too thick.