@daniel said:

Good start.

I'm unfamiliar with VRAY, so can't help you there, but I did notice your brick texture needs some adjusting - you have the top of the brick ending in the middle of a course, and vertical mortar joints on the corners, something you wouldn't have in real life. In your third image you might want to add some variety to your plants, rather than reusing the same one repeatedly so close together. Your asphalt material looks unnatural - Ross Macintosh posted a nice asphalt texture here: http://forums.sketchucation.com/viewtopic.php?f=81&t=29630&p=259795&hilit=asphalt#p259795

Thanks for the advice. I would love to use more variation of plants but those are the only two that I have that look realistic. I'm currently using them in my sketchup model and turning them into face me components and applying an alpha mask in vray. Know of anywhere where I can obtain some great plants?
I see that some people use photoshop to place them but that sounds like a challenge (although background trees are quiet easy with that process).
what process you all using to add vegetation?