Everybody remember to keep their tenses straight. He punched the bad guy. Or he punches the bad guy.
Comic book scripts are harder to accomplish than screenplays or teleplays. Each panel represents a whole scene, a complete mural, a full sculpture in 2-d, even if all that happens in a panel is somebody saying, "Hi." A scene in a movie script can be two lines or twenty pages, using one setting. But a comics panel is the whole setting, even if that setting is reinterpreted 5 times a page for 3 pages. Or more.
What are the best ways to establish transitions of time or location in a comics script?