Without a starting photo, the prompt defines both appearance and movement. Begin with one clear episode.
A short clip is easier to direct when its action has a beginning, development and visible ending.
Separate multiple shots explicitly; do not ask for a locked camera and an orbit at the same time.
Review action continuity, stable objects and whether dialogue fits the timing.
Not every model requires English. Start with clear wording in your preferred language; compare a reformulation if it is misunderstood.
It may contain competing actions and conflicting directions. Keep what can actually happen within the clip.
Text may not preserve an exact face. Prepare a character image and use a reference-capable model.