The instructions on this one definitely need improvement. It’s hard to tell which bars go where, and they don’t show you which side of the bars should face up. For anyone building this the sides with all the holes face up so you can snap the plastic pieces into them to hold the wooden slats.  I was also missing two screws so I had to improvise, and will be getting screws from a hardware shop to make sure all is secure. Once you get it built though, it’s a really nice bed. I love the LEDs.