A dark, moody, and atmospheric digital painting suitable for a psychological horror audiobook cover. The central imagery should evoke a sense of unease and hidden danger. Imagine a dimly lit, old, dusty attic room. Sunlight streams in faintly through a single, grimy, cobweb-covered window on the far wall, illuminating motes of dust dancing in the air. In the center of the room, partially obscured by shadows, is a single, antique rocking horse. Its painted eyes seem to stare blankly, and one of its wooden legs is slightly askew, giving it a subtly menacing appearance. The walls are covered in peeling, dark floral wallpaper. The floor is bare, aged wood. The overall mood should be one of neglect, decay, and a lingering, unseen presence. The color palette should be dominated by deep, desaturated blues, grays, and earthy browns, with subtle hints of muted, sickly yellow from the weak sunlight. The composition should be framed as a square (1024x1024 pixels), with a shallow depth of field to emphasize the unsettling focus on the rocking horse and the immediate surroundings. The lighting should be chiaroscuro, with strong contrasts between light and shadow to create a sense of mystery and foreboding. The style should be realistic yet painterly, with a slightly gritty texture to the rendering. This is for an audiobook cover, so the visual should be compelling and suggestive of the horror within, without any text elements.