Autopilot doesn't count towards following distance. To keep that score low, keep at least 1 second from the car in front of you when going over 50, but less than 3.
For improving hard braking, drive around where there are lots of stop signs. Accelerate to a decent speed and come to a slow steady stop.
For turning, don't accelerate out of corners.
That's what I realized after a day where one drive knocked me down to 95 and how I brought the score back...though now all that work for that day was pointless as it won't be included in the 7 day rolling score for (hopefully) this Friday