The third one does nothing for me. I quite like the others, but in pretty specific ways.
#1 strikes me as almost a texture, rather than a picture. It's a nice interesting texture, though.
#2 is pretty cool. I like it a lot. It's very busy, but I think that's kind of the point, and structurally it works pretty well despite being busy.
#4 is cute, and something of a technical challenge. It might make good stock, or similar. I'm not seeing it as a picture that stands by itself, though.
All that said, keep it up! You've got technical skills, clearly. There's no problem with your technique at all. You have visual ideas, which is 9/10 of the battle and something a surprisingly large number of people never get around to.
If you can refine what it is you WANT to do, then you can probably focus on that, and use your abilities in a more focused and directed way, and really make some excellent stuff. The only problem I see with your photographs, really, is a lack of direction and focus.