Board and batten walls are a timeless option and can ... Other than that, it's really that easy — just nail the trim to the drywall on its side, and voila! Your baseboards will now seamlessly ...

The green color is Dried Thyme by Sherwin-Williams. Board-and-batten trim can be done in rectangles or squares. In this guest bedroom by @frankie_jayne.home, the squares have a distinctly modern look.