You begin facing a bunch of chairs, turn slightly to your left and you will see 4 archways in front of you, 3 of them will be opened, go through in the middle, that's opened, once you go through this archway, step onto the white carpet and then go through the archway that's all the way on the left, once you take one step into this archway, turn to your left and just take one last step forward towards the window, you are done.