Peel Protective cover on first side
There is protective covering so it doesn't get scratched in shipping, peel both sides, one is clear the other is white.
The window frames will be in this MDF frame to protect them during shipping. There may or may not be painters tape holding them in place.
there is an etch line around the window frame. When gluing use that etch line as a guide.
Place it so it overhangs to have the joins hit each other similar to the baseboards. The etch line here helps you figure out where the middle is supposed to go.
Lock it in place
the notch on this side has a drop, so you can drop it into this space to get it locked in for play so you don't have it fall off in games.
These are all the parts for one container hill. Note that there are 3 different sizes of container walls. Two widest ones lets call them A (fronts). One that's slightly smaller, call that B (step). Smallest one lets call C (top).
Using one of A (fronts). Glue it in place like shown. You fold the sides up from the back and use this front to get it in place.
Drop in top step
Trying not to touch the beads of glue you already placed, put the top in carefully.
Fold up edges water crate
Fold up the edges to meet so you complete the assembly of the water crate.
This can be anywhere you like, you can place it off to the side or whatever, I like to have it a bit off center to make it look like someone looked inside.