1. Take oppo7x mobile phone as an example. Click "Tik Tok" on the mobile phone desktop to open it, as shown in the following figure:

2. Click the shoot icon after entering, as shown in the figure below:

3. After entering the shooting interface, click "Photo Album", as shown in the following figure:

4. Then select the face transformation effect and click "Use", as shown in the following figure:

5. Then, after entering the mobile phone photo album, select the photo, as shown in the following figure:

6. After selecting a photo, click OK, as shown in the figure below:

7. After adding the auxiliary effect of Tik Tok, click Next, as shown in the following figure:

8. Enter the title and click Publish, as shown in the figure below: