Use the first frame as the opening composition and the last frame as the required final composition. Create a 7-second transition: a hand-held 35mm camera follows a woman in a bright yellow coat as she walks through a crowded subway car. As the doors close, the interior lights flicker once; the camera pushes toward the yellow coat until the frame fills with yellow fabric. Continue the motion into the final frame, where the yellow fabric has become a sunlit desert dune seen from above. Carry the train rumble into a dry wind sound. Preserve the subject's forward motion. No text, no logos, no extra cuts.