Vertical scroll comics have no pages, so the rules change: empty space as time, what fits on one screen, speech bubble order and opening and closing.
Print comics show two pages at once, so layout guides the eye and the page turn itself becomes a tool for reveals. Vertical scroll flows only downward, and what comes next is not visible. That one-way movement is the starting point for vertical staging. So a reveal has to be designed not for a page turn but for the moment the reader scrolls that panel into view.
Widening the gap between panels lengthens the time the reader spends scrolling, and the story time feels longer to match. Deliberately stretching empty space to build tension or leave an aftertaste is the signature technique of the format. Packing panels tightly does the opposite and moves quickly. Placing a tiny image or a single sound effect within the empty space can add a sense that time is passing.
The vertical span visible at once is effectively the unit of staging. An image meant to land hard needs enough gap that it does not share a screen with what precedes it. Screen sizes differ between readers, so exact control is impossible and generous spacing is the usual safeguard.
Side-by-side bubbles create ambiguity about reading order in a vertical format. Stacking dialogue vertically to make the order unambiguous is therefore common. Too much dialogue in one screen slows reading sharply, so long conversations are spread across several panels. Simply tidying the direction and size of bubble tails makes it much clearer who speaks first.
Most readers use phones, so dark scenes can be nearly invisible in bright surroundings. Keeping contrast generous and checking on an actual small screen is part of the process. Some readers also use dark mode, so staging that assumes white margins can read differently from the intent. It is safest to scroll through the finished episode once each on a bright screen, a dark screen and a small screen.
Most vertical-scroll direction is decided at the storyboard stage, before any line art. Settling panel sizes and gaps, dialogue placement and the episode's final scene here means far fewer major revisions later. Shrinking the storyboard to phone-screen size and actually scrolling through it immediately reveals problems invisible on a large screen. This is the moment to catch stretches crowded with dialogue, scenes that pass faster than intended, and reveals that land on the same screen as the panel before.
With weekly serialisation, readers return to the story after a week away. The first scene of an episode therefore serves to bring back the flow of the previous one naturally, and the last scene to make readers wait for the next. There is no need for a big twist every time, but the basic approach is to cut at a point that makes readers curious — a character's decision, a new piece of information. Conversely, exaggerated cliffhangers every single week wear readers out, so controlling the rhythm is also part of direction.
A sense of direction develops quickly by analysing works you love. Revisit memorable scenes and note how large the gaps between panels are, how many bubbles the dialogue is split into, and how sound effects and backgrounds are used. Copying the scene yourself lets your hand understand why it was laid out that way. But publishing a study copy as if it were your own work can raise copyright issues, so keep such drawings for practice only.