2. Draw hot air balloons, clouds, plus sign, minus sign, multiplication sign, division sign, equal sign and other mathematical related symbols to enrich the picture.
3. Draw a square text box with one height and one height in the blank area, and then add the patterns of clouds, hot air balloons and digital flowers.
4. Draw a piece of land below, then draw a wavy border along the edge, and draw the text box, title and other patterns into the border.
5. Finally, add colors to the text box, grass, background and title according to your own preferences, and then draw horizontal lines with equal spacing where there is a large blank space in the text box.