If you can already see the texture of the existing wallpaper through the layer of paint, then the texture could also come through the new layer of wallpaper. If that’s the aesthetic you want, then proceed. But if you want a smoother surface, you should either strip off the existing paint and wallpaper or hang a layer of liner paper before proceeding.

Yes, peel-and-stick wallpaper is available that’s made from vinyl—it actually is the most common material used in peel-and-stick wallpaper. Learning how to install vinyl wallpaper is far easier when you’re using a peel-and-stick design than with adhesive. You could also select peel-and-stick wallpaper that consists of paper, polyester, or natural fibers.

White walls are considered a classic and timeless look and will most likely always be in style. A white wall easily blends into any type of home decor style which makes it a suitable option for most homeowners. Another appealing quality about white walls is that if it's not a color someone is going for, the color is easy to paint over.

There can be too much of a good thing when it comes to accent walls, so avoid creating one in every room in your house. Some rooms, like bathrooms and kitchens, don’t naturally lend themselves to accent walls, so it’s best to skip them there. Of course, your home should reflect your own sense of style, so if accent walls in multiple rooms appeal to you, there’s no hard-and-fast rule forbidding it.