1. Open the software with beauty function, import the picture of the cat you want P, select Beauty-Face-lifting, click the face-lifting function, and pull it up from the bottom of the cat's mouth edge line, a few times. Click the "Contrast Before and After" button in the lower right corner to check to ensure that the picture is not deformed. P after that, save the picture.

2. Open the video editing software and import the original picture and P picture. The transition of two pictures selects the "overlapping" transition effect.

I hope the above methods can help you successfully add smile special effects to your cat. Please feel free to let me know if you have any other questions.