Photoshop Space with Junk

I created a scene from a world where we build colonies in space. I found a background of space as my backdrop. I found a picture of a planet and a space station to serve as set pieces for this. I took a picture of a glass sphere I had and made that a bright orbiting planet with a brush behind it.I took a picture of my trash can and a wifi modem, painted out the outlet ports, and combined it together to look like some sort of space station. I shaded and used clipping masks to make the objects blend in slightly better.