That smash routine is actually very difficult for you. I suggest simplifying it to cross court smash and then right leg scissor kick forward, diagonally forward, straight netshot, go straight backwards for lift, cross court smash, diagonally forward and so on. You have difficulties in getting your right leg to go forward on the scissor kick. The shuttle run routine, need to land with a better split step for change of direction. Picking up the shuttle on the right side needs your foot to point sideways more. the drives routine, you need to stand closer to the service line. You are too far back. Stand about one to two feet behind the service line. Being too far back means many times, the shuttle is already descending when you try to hit it. It becomes harder to well.