6/15 driving range

Set up:
1) loose up and sink shoulder, spine straight
2) butt is stick out, feel the heaviness
3) Let the arm fall freely

back swing:
1) take off within you
2) roll left foot, don't lift up the heel and stick on the toe (it is a bad habit need to fix ASAP)

Down swing:
1) Lateral shift is not enough and hesitant. Fix this problem probably can fix the flat shot problem.
2) Follow through is not enough