Brick pattern is unnecessary and not exactly what I would call modern/contemporary. I spy some spam, and the flowers could use some work. Furthermore, it would be in your best interest to make an interior as well as a consistent roof. Landscaping would be nice, at least in that courtyard enclosed by the fence. Also, I'm not too keen on those windows, maybe you can make them bigger? Finally, you could use more furniture/divide the rooms better.
Overall, it gets a 4 or 5 out of 10.
If there's anything you would like me to elaborate on, just ask.