As stated, the pictures are nice. Some interesting subjects, nice angles, clear focus.
And you are 17, so you have a ways to go and time in front of you.
I definatly think that some studies in not just photography and visual arts will help you get to where you want to.
Can you go professional with these? No.
Are these are good start for someone your age who wants to go professional? I think so.
But I'm not a pro myself.

Start researching some of the real pros and see what they do and then compare yourself to that and strive to achieve what they do.
Quick C&C... I don't like the plan picture, too busy, no picture focal point. Golf ball picture has too much crud in the pic, but nice colours. I like the coin op one. Not sure what you were doing with the oil spill / rainbow one. The candle is too out of focus,the fence and the car are too tilted in my opinion, I like the closeup of the ropes and the water on the dock
As for the posting of pics, its common courtesy on forums to post a small number of pictures. I have a slow connection, how am I supposed to know that this will take forever to load?