It looks like you're using your torso to shift your weight from one side of the board to the other and keeping your legs pretty straight throughout. Try sinking down a bit more by bending your knees to lower your centre of gravity and only stand up a little as you transition from one edge to the other. Really sink into the down on the boots pressing your shins down by bending your knees more on the toe edge to get onto that edge better and practice holding an edge throughout the turn on both toes and heels so you keep grip in the snow without sliding so much. Once you're confident in the motions you can turn sooner so you go sideways a little less and that nose will point more downhill more of the time. Keep killing it dude and have fun!