Tools/Materials: Take drawing tools as an example.

1. First, prepare the initial state of the swallow or fish on the drawing tool interface.

2. Then in this interface, select the wooden stick in the upper left corner.

3. Then in this interface, move to the lower left corner.

4. Then in this interface, select the wooden stick in the upper middle.

5. Then in the interface, move to the lower middle position.

6. Then in this interface, select the wooden stick in the upper right corner.

5. Finally, in this interface, move it to the lower right corner to change it to the opposite direction.