I think it looks more "daytime" where the real Fox logo is more "dusk/early evening", but I imagine replacing the sky texture will take care of that.

Subtle thing here, maybe it's modeled that way and just hard to tell, but it seems like all the edges of the structure are "sharp", perfect right angles. If it were a real structure, the edges would be blunted off just a touch. Don't know how much work it would take to re-model it with the edges rounded just a tiny fraction, but might be worth pursuing.