Set up your feet early. Don't look where you're going. Stretch out when kick explodes. Chest will be lowest point of body. Angle of the body keeps feet from breaking the surface.
Shoulders are out of the water.
Extend towards the wall. Forward to set up the kick. Knees inward during kick. Bob Always attack the front of the stroke for kick glide. Key to fast breaststroke is not generating more velocity but reducing dead time.