You're currently staring at the open white door. Turn a hundred-and-eighty degrees, to face the exercise room. Turn slightly to the left, you'll see two black mats on the floor. Take one step forward to the left, so you're at the foot of the black mat closest to the left side of the wall. Once you're at the foot of the black mat, probably standing on the 'Harbinger' words on the black mat, closest to the corner of this room, you're done.