Impact is rendered from top to down with a step forward.

Starting advance, a back hand (rising strictly on the center of your body) makes swing above a head...

... The Lifted hand (on swing) reaches approximately up to back of the head...

Making a step forward there is a lowering a hand strictly on a vertical...

Impact is rendered by an edge of a palm.

Impact stops at a level of a solar plexus...

The rack varies on opposite...

The shock hand should not strain in a shoulder...