Right now you're facing towards a wall. Now turn left, there is a staircase in front of you, climb up the staircase and slightly turn left, there is a platform in front of you, move towards the platform and turn right. There is a carpet in front of you, move forward in the carpet, where you can see a window to your left, move towards the window and turn left. There is a wall in front of you, move towards the wall and stand in front of it, facing the portrait and it is your end point.