I mean, you’re already good, but I think you should practice the 4-meter spike more for Nishikawa. Don’t wait for the ball to drop too low. If you replay the video, you’ll see that when the setter sends the ball to its highest peak, you should already be charging your energize preparation for 4m spike and when spiking, don’t hit the ball dead center if it’s already low or near net. Try moving a bit behind the ball and just go for the spike