Nice images. You're getting some interesting juxtapositions and compositions as you photograph what interests you.
Which leads to one question- why do these subjects interest you? I'm not asking to get an answer from you, just throwing out a question to ask yourself.
A simple thing to pay attention to- the edges of the frame. People tend to not talk about the edges, but that's where you make or break a photo. Anyone can put Half Dome or a rusted truck in a frame; its how you decide what to show and not show along the edges that will be huge in defining the image.
And look at other photographers. Find an image that you like and study it. Why did they stand where they did? Why not three feet to the left, or kneeling? What would you have seen in the same place? Follow the lines, the structure, the tension between 'content' and 'form.'
And whatever you do, do NOT be out shooting and try to copy what someone else did in shooting a similar scene. Also, do NOT try to NOT copy what someone else did. Find the photo you want for the place and time you are in; let your study of other photographs drop away when actually shooting.
Two photographers I'll suggest you look at- Paul Strand and Eugene Atget. First, because they were both masters. And second, because they didn't shoot what you are shooting, so you'll learn more about photography- what can Atget's photo of the Pavillon Français, Trianon, teach you about shooting an abandoned gas station?
