Panel 1:
Close up on the gate of Limbo, revealing the markings along the side to be a large amount of various symbols, filling the available space. Most seem to be fairly abstract shapes, but others are more representational, like a tree, a window, a shoe, etc.
Caption: There are buttons on the gate.

Panel 2:
Tile pushes a button on the gate and the swirling mist within has been replaced with a view into a field full of sheep under a cloudy sky.
Caption: This one's a sheep.

Panel 3:
Tile pushes another button and leans forward to look though the gate which now leads to a room with a bed.
Caption: A bedroom.

Panel 4:
Close up on Tile's hand on a button shaped like an egg. The view within the gate is all white.
Caption: An invisible egg house!