Here is my street scene w/prefabs & assets. I’m open for suggestions. Hope you like it 
I really liked the street sign detail, the lamps are cool either but I`ll sugest a sidewalk maybe and a larger street It might open your scene and make your cars more visible, its just my opinion. Keep your good work! =)
Thanks a lot for your opinion
Yea, I thought about adding sidewalk and stuff but I really wanted to jump to other section. But thanks! I probably will come back to this project and play a bit more.
If you right click where your assets are, go to create, and click Material. You can create simple colored materials to apply to your objects. Just drag the material over the objects in the scene to color them.
A simple way to really make your scene shine 
Thanks a lot for the tip
I’m doing it now. I’ll update the screenshot tomorrow after coloring it.
