This puzzle can be confusing at first, but it is actually pretty easy. Head over to the left side of the room and close the shutters. Then head back to the middle of the room to the crank that raises the platform. Once the first shutter opens, turn the crank and then quickly get onto the platform. Once the platform gets pushed by the wind, quickly jump onto the wall then onto the ledge right above and make your way to the wooden platform on your left.