enhance the visual quality of this raw architectural model of a sloped garden improve materials lighting atmosphere and realism while keeping the architecture and geometry exactly as provided add a few subtle hedges in the background for depth and spatial framing but do not modify terrain layout walls paths or levels the design must remain unchanged architecture and geometry must not be altered plain construction joints no lighting features at transitions style high end architectural visualization natural planting concept calm and elegant garden atmosphere soft daylight realistic textures refined landscape detailing