We made 2of these a couple years ago for our boys space themed room. I later painted the frame black and really like that look with the cool steel. The names were made by punching a nail through the sheet with a hammer (but be careful, it scratches easily; 'liquid nails' was used to glue on the wood frame, and then it was screwed into wall studs.
Now that our oldest has his own room with a loft bed, we've hung it on his wall. The kids love displaying artwork, photos, and notes on it with magnets.
We used tin snips to cut one sheet in half - and those halves ended up being the perfect size for 2 twin beds. I'm pretty sure they're sold in several sizes.