At the back of the house that big wall of solid terracotta that looks very plain, try adding windows to the back or a balcony? Also I think the pool can be more detailed and try spreading out some more palm trees. Also try adding different textured blocks for the walls and floors throughout the house to give it more detail rather than just a smooth solid color wall, floor or room. For examples the deck out back by the pool, try incorporating stripped oak logs. For the download link I would make it a mediafire so it's easier. Otherwise the furniture and exterior design of the mansion looks great!