The following is a simple picture of the stars in 13 1 year:
1. Prepare a black and white pen.
Draw a lot of dots on the paper with a pen. They don't have to be exactly the same size, but they should be arranged neatly.
3. Leave a proper gap between points to form a sense of distance like a starry sky.
4. Fill the whole picture in the way you like. You can choose to add bigger or brighter dots in some places to highlight some areas.
5. Check it one last time to make sure the whole picture looks balanced and harmonious.
It should be noted that 13 1 star needs patience and meticulous completion. If you want more complicated and exquisite works, you can try to create with pens with different thicknesses, colors and shapes.