Cityscape in two point perspective

In art class we had to draw a cityscape in two point perspective, this is my drawing. A large part of this assignment was creativity, but of course you had to draw it in perspective and at my drawing you can't see the vanishing points. I had a 6 for my drawing, I think I could do better.

My painting of a sandwich

This is my painting of a sandwich, I got a 5.5 for it. I think I could do better, but I agree with my mark. I'm not so good at painting as you see........my brother thought it was a television. So I have to paint better and clearer.