Plan the reading experience, not just the plot
Comics are read in spreads. Page 1 sits alone on the right; from then on even pages are on the left and odd pages on the right, and every odd page ends with a page turn. Reveals belong at the top of a left-hand page, cliffhangers at the bottom of a right-hand page. The planner shows each page as a card marked L or R, marks the page turns, and lets you pair an even page with the next odd page as a spread.
Write what the reader sees, not what happens. Save the plan to a project and it is there the next time you open the planner from that project.