Female Model Walks Along Lakeside in Elegant Dress

Please create for me an AI video with a 9:16 aspect ratio frame. In the video, the female model in the original photo will move according to the following steps: 1. Starting from the current pose, walk gently forward 3 steps. 2. Then rotate gently one full turn clockwise (counter-clockwise). 3. Continue walking backward to exactly the starting position. Video requirements: The model must keep the original clothing, makeup, style, color, and all details on the dress as in the original photo. Hair, face shape, and posture remain unchanged. The background scene remains as in the photo, with depth and suitable for movement. The camera moves smoothly with each step the model takes, always keeping her in the center of the frame throughout the video. The movements should be natural, authentic, like shooting a real person.