When decorating the walls behind the bed, beginners in interior design often make mistakes in geometry - they make curved lines with straight lines.
If the room has a rectangular geometry, there are no ovals and waves, then you don't need to make them. If there are already waves and you are adding more, then make sure that they are combined with each other.
Due to the arc and wavy shapes on the wall, the room often stretches wide, but not up. And it creates a feeling of a flattened room.
How not to do