Can't see much of the arm from that angle and the followthrough is cut off, but it doesn't look good and basically have the same issues most do here. You balance is behind your rear heel as your toes lift off the ground and you extend the rear knee. Stay off the rear heel! And keep flexion in the rear knee. You also don't pivot on the front heel, so your weight transfer isn't effective. Looks like you are leaning back instead of turning back. The disc comes out nose up probably from your balance/swing coming a bit over the top.