Modern house visualization

Hi,
this is my last project - modern house visualization. It’s a wood construction, but it doesn’t seem like one. Rendered with Cycles 450 samples.
Let me please know, what would be the first thing you would improve on this viz.


Credits:
BMW model by Mike Pen

Ford model by Ruff

Shrub model by Andrew Price
http://www.blenderguru.com/

Tomas