Not gonna lie, this looks much more like an "instructions unclear" meme.
So I kinda
HAVE to ask... was it intentional? (no offense regardless of answer, but that's one amazing misunderstanding for sure)

But yes, as ReesesPieces said, edit the stairs to raise their height and especially their "depth", so the top of the stairs end up behind the wall (and with the second stairs set, above) - once you did that, you have plenty of room
on the top space of the stairs to place the platform (
not on the wall, but on the stairs!, just like you placed a second set of stairs on the first.)