How to do big head special effects? You can use the computer-side love clips to do big-head special effects. It's not difficult. Just use a basic function of the filter. You can follow these steps:

Import the video with big head effect into the software, click "Picture Style" and click "Filter" in the left column. Expand the list of novel creative effects. Double-click "Bulge" so that you can apply special effects. Then choose which time period is applicable. In the center panel, click the cross button to the right of Center Position. This is used to choose which position to expand, because it is a big head effect, so aim the center point at the head of the character. Then you can adjust the "intensity" and "radius", and the big head special effect will be done!

Big head special effect

I hope the above steps can help you ~