Detail sanding after texture is an important step to ensure a clean and seamless finish before painting. Using a sanding sponge to crisp up corners, clean up any drips or overlaps, and address any imperfections like dust pockets or debris will result in a professional-looking final product. Focusing on corner bead, angles, and any texture spots will help achieve a smooth surface for painting. While not every painting crew may perform this step, it is recommended for a high-quality outcome, especially when dealing with different paint colors or finishes. With a little elbow sanding, attention to detail, and some cleanup, the textured walls will be ready for priming and painting, giving a polished look to the finished project.