Bad Snacks opens this bit with a quick but important prep step before arranging: consolidating audio chops into unified clips using Command+J in Ableton Live. This makes each section easy to duplicate, copy, and paste without managing a tangle of fragmented audio.
From there, she outlines the song structure the arrangement will follow: intro, verse one, chorus, verse two, chorus, breakdown or bridge, final chorus, and outro. That's a standard pop framework worth keeping in your back pocket any time you're turning a loop into a full track.