25 Canada Square (Citigroup Centre) 1.0

This would've looked decent on Google Maps but low-poly SketchUp conversions (well, low poly anything) just doesn't cut it for SC4, especially since it's 2016. Your lot is in need of some serious work as well.

I highly, highly recommend you visit the BAT tutorials and post in the forums if you're interested in creating buildings for SC4. There will definitely be people ready to help you out there.

At first, the model it's not a bad work for a beginner, but I think you should use better textures for making your building look better. Also, try to put some props in the LOT for adding realism, maybe you should do some research in Street View for making it  more accurate. If you have a problem identifying the props in your lots, I believe the Reader says which dependencies have the lots you enter on it. And as kingofsimcity said, doing some search can always help. Practice makes perfect!

Good luck with your next creations!