Maybe what I'm trying to get across will be made better with an example:
DSC_4643 by
franklinrabon, on Flickr
Here's a picture I just made a couple hours ago. What is this a picture of? One answer is 'a computer, a computer speaker and a headphone tube amplifier' but that wouldn't be a good answer, that's not something to convey. Well it is, but this picture does a poor job of conveying those things.
What I was trying to convey is a sort of digital v. analog idea. The idea of more modern technology 'towering over' older technology. Further aiding the effect was the color. The more modern technology, the apple computer, emits a clinical sort of bluish glow that it casts onto the speaker. The older analog technology emits an orange glow that it casts all around. The speaker sort of serves as a dividing line that isn't very clearly on either 'side', hence it's central placement. The apple logo is sort of 'looking down' from above. the tube is sort of vaguely 'looking up' and you can even see the oblique reflection of the apple logo on the tube.
The thought I wanted to convey then suggests the composition, and it suggests how to recompose and improve the shot as well (this was mostly just the first shot, and I'm sort of playing around with the concept in my head before I really make another try at a more 'final' shot).
My point is that your photo has to have substance. It has to be about 'something' other than just looking cool. It doesn't have to be a story, though it can, it doesn't have to be an object, though it can, it just has to be SOMETHING. Then you can from that starting point figure out how you want to compose your photograph in order to bring that out in a way you want.