Not so sure if this photo should be under streets or under the abstract forum. Let me know if it should be under Abstract. Thanks.
I refuse to believe that this is the work of an amateur. Some seasoned photographers I know can't even achieve what you've achieved in these few shots. The thing about your pictures that gives you away, is that they all have a focal point. The photographs of most beginners lack focus. I disagree with the rest of the guys that have commented on this thread. If you're an amateur as you say you are, you're doing a great job!
(But personally, I think you're faking. At least 2 - 3 years of experience shooting, in my opinion.)
Of course, some of the photos have been unnecessarily PP-ed, for example the shot above. Leave it alone! It's good enough.
Looks like you know the rules of composition already. I can see that very obviously in your work.
Keep up the good work!