The door frame area matches the door in the right Panel 2, so hold on Panel 1 and drag that to the right on top of the door with the boy, which reveals an outdoor scene on the left, and changes the room with the boy to the rooftop. Zoom in on the central door in Panel 1, and you'll now see a door with a red flame mark on it. Use to zoom out of the empty window tile, and you'll see a small button in the upper right corner of Panel 2 that allows you to pan the scene to the right while the dragon continues to roam through the city in the first panel. So hold on the window, and drag the window foreground layer to the right into Panel 2.
The game will put the scene tile in the upper left corner of the tile grid (Panel 1), and you'll be able to use the game's unique mechanic for the first time. Press to zoom out of the bowl, and the boy will now know that the bowl is what he needs.
