Rotate about 30 degrees to each side, then look slightly upward. Watch whether the jawline and eyes stay attached to the face. Repeat the movement twice; one good frame is not a reliable pass.
A convincing face-swap preview has to survive motion, occlusion, and ordinary lighting—not just one flattering still frame. Use this checklist before recording or joining a call. Work only with a reference photo you are authorized to use, keep the camera fixed, and change one condition at a time.
For a browser-based comparison, try the live swap face preview with the same reference image and repeat the short movements below. I am connected with this tool, so the checklist focuses on checks you can make yourself rather than a claim that any result is guaranteed.
Record a short sample if your workflow permits it. Review the face outline, eyes, mouth, hairline, and recovery after a hand crosses the face. If the output will be shown to others, disclose that the image has been altered.