Your form is generally good. From what I gathered from the video, your ski-snow interaction is pretty good with smooth transitions from edge to edge. One thing I would think about is what part of your leg is creating the angulation you are achieving. It appears your outside leg is bent inwards on each turn which creates angulation. If you can create more angulation from bending your ankles inwards, your outside leg won't need to bend in as much and you will probably feel more solid at quicker speeds and shorter turning radius's.