I agree with Picasso and other artists, that the composition of a piece is what makes it art. The fact that I don't personally construct each item by hand is not important. What matters is which objects I select, the process that leads me to make the choices, how I arrange those pieces and how I compose the final image. Those are the choices that make it art.
So that's the basics. To be fair, I suppose I could reveal some of the process I use. That might help with understanding what I do. I'll try to do that next time.