I see you've already received plenty of great advice, and I’d love to add my perspective! If you’re looking to brighten your walls with floral wallpaper, consider designs with a soft watercolor effect—these create a fresh, airy look without overwhelming the space. Also, semi-transparent peel-and-stick wallpapers can layer beautifully over existing ones, subtly enhancing the pattern underneath. Have you thought about using floral wall decals instead? They allow you to adjust the design as needed while keeping the base light and elegant!