The tree hut with spikes on the floor

The hut in MORE TREE HUTS has spikes on part of its floor, and they cost Seymour energy.
Nudge 1Where to look
You don't need to cross the spikes at all.
Nudge 2A stronger push
What you came for is up on the left.
Nudge 3Almost there
Jump onto the platforms and keep off the right-hand side of the floor.
What you needOther problems to solve first
Solve these first (each opens its own page, no answers on the way):
Show the solutionThe whole answer, with a video
Inside, a studio key lies up on the left. Jump up to it, pick it up and go back out by the door without touching the spikes on the right of the floor. This key opens the door to The Wizard of Oz in the maze.