Do not allow the shoulders to drop. Do not lean back. Squeeze the gluts of the kicking leg, tighten the kicking side's obliques and lower abs. Do these kicks no higher than the hip for the sake of safety. Footwork Footwork is a personal movement with many variations.
Legs are light, knees slightly bent and body balanced.
On the Cross Jab, drive forward with the cross by rotating the hips and pivoting the rear foot. Push off the ground from the rear foot. On the Cross Jab, do not bend over in any direction. This will allow for a safe, solid kicking transition.