Fig. 1 shows the start with Nage's back to the bag. Nage will look back and the foot will come up straight into the bag. It is not like a karate kick where the foot is cocked to the knee and then thrust out.
Fig. 2 shows the foot hitting the bag. Normally this would be at about knee level. Notice that as the foot went up to the rear the hands went up to the front.
Fig. 3 1st Punch
Fig. 4 2nd Punch
Fig. 3 shows the 1st punch. Nage does not bring the foot all of the way back from the kick. The idea is to press the attack on Uke. The foot will snap back some and then be placed on the floor for the strike. Nage just turns, drops the foot and delivers the punch with the Tornado Twist.
Fig. 4 shows the 2nd punch. The Kick and two punches are very close together in time.