The base looks good for a start. And what is that map?
It reminds me of the big wedge that juts out among Minas Tirith, that Lord Denethor hurls himself off of after a failed attempt of burning himself alive with his dead son Boromir.
I like it, but a problem I see is that the base is far too narrow (for a mansion). Even if it isn't widened, it could still turn out well.
But yeah it needs some work. The mountainside is too plain and ugly. Also it looks like you made the roof five blocks high, try making it higher. When I walk in a building my head doesnt scrape the ceiling.