Cutting In (Brushwork)

What happens here

After rolling the main wall areas, use a paintbrush to 'cut in' along all edges, such as where the walls meet the ceiling, around door frames, and window trim. This requires a steady hand and careful precision to create crisp, straight lines where the wall color meets other surfaces. The painter is seen cutting in with a brush around a door frame, along the ceiling line, and around a window.

Goal: Create clean, sharp paint lines along edges and trim.