1. First, cut off a corner of the paper box and cut it into a car body, as shown in the figure.
2. Cut the colored paper into the shape of the car body, and then stick it on the carton with double-sided tape, as shown in the figure.
3. Roll another piece of colored paper, and then stick the joint with double-sided tape.
4. Cut the colored paper into four equal parts, and then put it on with a toothpick to make a wheel.
Stick the wheels under the paper box, so that the handcart is finished.