"Create a 2D mansion foundation plan situated on a sloped hill. The plan should include detailed instructional dimensions, a car access road, and a circular living room. Incorporate one master bedroom, a kitchen, and civil engineering specifications. Provide sketches using 2H, 3H, and 4H pencils along with appropriate drawing tools such as dividers, sub-squares, and templates. The drawing should be on A3-size paper and include watercolor shading in brown, black, and white for a perspective view. Additionally, include a small stone pond, templates for instructions and specification lists, stone pitching, and a retaining wall at the slope angle ground level. The background should feature a frost effect with a spiral design covering the least area."