Nice try! My "poor" considerations:

1. I don't like the colors, but I understand it's not an easy shoot. I think you need a bit of camera correction for the distortion.
2. For me there is too much dark in the frame. Anyway... it seems When I come around video by Green Day :)
3. I like this one very much. Only a little bit of dust over the lens.
4. Nice proportion and crop. I think in this kind of shoot is mandatory to use camera correction for vertical lines.
5. The last one for me is perfect.

Keep shooting! We'll wait for the next post :)