You need to get your body more connected. Your lower half does not drive your arm very well. The arm needs to get a little tighter to create more external rotation of the shoulder. It will transfer energy better through the arm. Also, your front side doesn't stabilize you very well. It's called blocking. when the front leg lands it should be transitioning the energy from a forward move to more of a rotational move and after foot strike your knee continues to travel forward instead of stabilizing the move and planting firmly. The front foot/leg is important for velocity and patterning for ground force.