From murals to wallpaper to gallery walls galore, more is more when it comes to wall treatments these days — and there’s no better place to go totally maximalist than in your stairway. (After all, is your space truly maximalist if you haven’t added pattern or color or texture to every inch?)When Michaela Dupkanic (@mynwnest) first moved into her 1940s bungalow, the stairs leading to the home office/guest room were covered in shag carpet, which she quickly ripped up.