Start with a clear, well-lit image and leave some room around the main subject. Extreme crops give the model less visual context and can make camera movement feel cramped. For a portrait, ask for restrained motion: a subtle expression, natural blinking, or a slow push-in often looks more coherent than several large actions at once.
For products or landscapes, name the movement you want to see and the camera behavior separately. “Steam rises from the cup, slow orbit to the right” is clearer than a long list of style adjectives. If the first clip is too busy, simplify the prompt before changing the source image.