1, draw a 60*60 square with blue filling (the size can be customized), and draw two white filling stars.
2. Copy two stars, put them in proper positions, and then group them;
3. Open the shutter of the transformation tool, and copy one set of graphics up, down, left and right:
4. Select All-Cancel all groups-Convert to curves, and then remove the useless ones.
5. Define the pattern before ungrouping-selection, shaping-subtraction.
6. In the view, select Align to Object, Select Object, Tools-Create a pattern, and then press ctrl to easily round the area. Then you can define two colors, or full color!
7. Simply draw two figures at will. There is a hatch dialog box in the fill tool. After opening it, you can find the two colors or full-color patterns you just defined.
8. Set a shape to look better after changing it!