1 · Draw & Track
Pause on a frame where the face is clear, then draw around it.
Box — drag a rectangle. Pen — click points, click the first again to close. Esc cancels.
Tracks forwards and backwards from that frame.
The face must be visible at all times. If it turns away, gets
covered, or leaves the frame, the track will fail — there is no
way around that. Use a clip, or a section of one, where the face stays
in view throughout.
Lost the subject