When extending, what should the prompt include?

Suggested structure: the ending state of the previous segment (character posture/position) + the key event of this segment + camera instructions (pull back/follow shot/cut to close-up) + a sense of duration (brief/slow). This makes it easiest to edit into a continuous narrative.

How can long videos look more like a professional finished film?

Write a segmented outline in advance, and specify shot size and pacing in each segment’s prompt. For transitions, use visual instructions like camera pulls back, wipe transition with an occluding object, or a block exiting the frame through movement, instead of abstract terms.