How soon should the club face be looking at the ball during the down swing???.................
I am not sure about what you're trying to ask.
The clubface is turned on the plane for a swinger, but not for a hitter. Clubface constantly closes like a paddlewheel for a hitter during the downswing. But for a swinger, clubface moves down plane until release, like a karete chop motion with left hand. When the face will square will depend on the release type you're using.