The method is as follows:

Tools/materials: Xiaomi 11, MIUI13, wakeup picture 5.7.0

1. Open the picture

Go to the homepage of Wakeup Picture and click on the import option.

2. Select the eraser pen

Click on the portrait and click the eraser pen.

3. Adjust the pen size

You can see a slider below and adjust it according to the actual situation.

4. Eliminate unnecessary parts

Apply the pen directly to the unnecessary parts and click the check mark.

5. Complete the P picture

You can see that the unnecessary parts of the picture have been P removed.