This Adavu has a stretching action in the leg where the foot is flexed and the heel is placed on the floor. The alignment of the hip bones is important in this. The turn-out and stability in the Araimandi position of the dancer must have developed by the time he/she starts the Naatadavu.
The second Naataduvu uses the 'swastikam' position. Please remember to keep your back heel up and not over-cross your legs in this position.