Step 3: Glue
Glue on all the parts you want, it's not the hardest thing in the world, just try to make sure that there isn't any stray glue on your project or it could degrade the look of it.
Plan out how you want it set up before you glue, I wanted the rubber feet on the bottom so it would lean to a side when its just sitting on a table or something. It makes it almost look like it's on display but without adding a special stand for it.
As for the metal i just grouped them together, then later decided i wanted wires between them.