Starting with the Heart Frame in the lower left corner of the room, work your way around the room in a clockwise direction, collecting each of the Heart Frames.
You should end with the Heart Frame in the lower right corner. Once you collect this, the Gols will wake up.
Push the Emerald Frame to the left until it is one space away from the left wall. Then push it up in front of the Gol along that wall. Then collect the key.
Push the Emerald Frames above the bottom skull, and below the top skull, so that you trap the skulls into the rows below the rocks, so that they can't escape when they wake up.
Collect the two Heart Frames along the left wall if you haven't do so already. You'll get two egg shots
Walk to the right, and push the two Emerald Frames above and below the trapped skull to the left. Push the middle frame up or down, and then shoot the Skull twice to remove it.
Collect the three Heart Frames behind the removed Skull, and then collect the key before that Skull has a chance to return.