2. Next, connect two balloons with different colors, as shown in the figure below.
3. Place the balloon as shown below and stick it on the pipe.
4. When the card is stuck, the pipe should be wound around and then pushed in.
5, the operation of the card ball must be careful, please refer to the following experience for the production method of the three-dimensional center.
6. Finally, glue the balls on the pipes on both sides, and then put them on the base of the column to form a three-dimensional arch of love.