I’ve seen cheap "forest" wallpapers that look like blurry photos printed on plastic. If I’m going to do a whole wall of trees, I want it to look like a painting, not a giant sticker.
The key is the material, not just the image. Go to tree wallpaper and choose the Canvas Peel & Stick option. It’s a fabric-based material that has a slight weave. When you print a "watercolor tree" design on that, it literally looks like a mural painted directly onto the wall. No glare, no plastic shine—just a rich, matte finish that makes the artwork look 10x more expensive than it actually is.