Hey, that's looking better. Also I totally lead you astray as Ozego pointed out haha!
I learned about horizon lines when I was a little kid but I just never actually thought about using them. I think I've been making the mistake of drawing my perspectives backwards for my entire life and just couldn't figure out what was wrong.
ANYWAY, your perspective is just as backwards as mine. Check Ozego's post if you haven't already.
Aside from that, I think you could add some more interest to the building. Pillars at every vertical edge, a divider between the floors like you had originally, trim around the top where the walls meet the roof, etc.

Composition-wise I think the shadow would look a bit better if you made it a bit shorter so that it included the roof tiles. That way it wouldn't have the implication that it goes on forever.