Anything with too small a pattern will just get lost on the wall. Also beware of a red and green print. I once bought a fabric for a window treatment in these colors and when you stepped back across the room, it just looked gray because your eye mixed the colors. Ick.

I like Beverly’s suggestions. Also the green grass cloth but if you want an accent, it might be too subtle to be an attention getter.

My bedding is what you see... ivory/off-white flax linen duvet and sheets. I can add color with pillows and a throw. The ikat wallpaper is very pretty and cheerful. Thank you for suggesting it.

I don't see any rendering nor any bed linens

Bedding is the first choice then see if you even need wallpaper but that first one is a huge no for me IMO guest rooms should be like 5 star hotel rooms very gender neutral so I would probably go the grass cloth if you just want a bit of texture. Why green at all ? Please post the pics of the room and the bedding.

I don't know what happened. Here is the rendering of my bedroom with Edith wallpaper.