It looks like a decent start, but has a salient issue I see in a lot of beginning users work.
Many of the textures and objects in the scene are not proportional to what they should be. This gives it the feel of some small little toy, whereas I'm sure you want something a bit more realistic.
For instance, look at your first image:
The street lights are MUCH too thick and large. The pole is too thick and the head of the light is too large. Try to keep things proportional. This is the same with the lines on the road, they're much too thick. Look on either side of the yellow lines, there's barely any room to fit in a car.
My advice, take advantage of the zoom tool. Use it to get up close and get the detail the correct size, it will make this much more believable. Your design looks pretty solid though, just work on the proportions.
