Choose one photo for each performer. A front-facing portrait from chest-up or waist-up usually works better than a distant full-body shot. Match the lighting and crop as closely as practical. Remove images with closed eyes, severe blur, masks, sunglasses, or another visible face in the background.
Decide the left and right order before uploading. The first slot becomes the left performer and the second slot becomes the right performer. If the relationship or visual joke depends on a particular arrangement, do not swap the files after generation starts. The internal prompt repeats this role assignment.
Start with two clear, similar portraits because the locked medium-wide camera minimizes identity drift. Generate one test before purchasing a larger pack. Review the first seconds, both faces during gestures, hand movement, and the final frame. If identity slips, replace the weaker source photo and retry.