2. Click on the picture to return to the original state of the picture and remove the traces of the eraser.

3. If there are multiple steps, find the wrong step, and click the above step to return directly. Or just click on the step you want to jump to, and you can jump to the specified step, so that you can control your progress at will. As shown in the figure, there are multiple "erasers". Click the eraser to reach the specified step.