About face is turning around. You stick your right foot out behind your left foot, and turn on your left heel.
For right face -
1 Pick up your right toes and your left heel.
2 Pivot on your right heel while pushing off with your left foot.
3 Bring your left foot forward sharply, heels together, to re-form the 45ยบ angle.
.For left face, same but in reverse.