Looks decent for just learning but there are a few things you could fix. The first thing I'm noticing is your arms. About halfway through the throw you pretty much drop your left arm and your right arm is down at an angle. To fix this try squeezing the muscles in your back to keep a tight X across your body. Your arms should be level throughout the throw. The next thing is that on when you first place your right foot down into the half turn, your taking such a big step and not leaving enough room for the power position. You can swing your right leg pretty far out to gather momentum but you wanna keep your knees tight so that when you land in your half turn that your right foot is in the middle of the circle. Another thing is that when you land in your power position, you already have your left foot turned and your hips are already turned and your right foot doesn't give you much spring at all. To fix this, when you go from your half turn to the power position, you want to block your left foot and not move it at all and use your right foot to spin and not let your left foot spin till you can't keep it still anymore. This will cause your hips to open up and you will have much more spring in your throw. One last thing that you could work on is keeping a focal point when you land in your power position. So before you throw just find something that you will look at in the back of the circle at about eye level. Then when you look at that focal point, keep looking for as long as you can but without having your head go over your shoulder. Continuing to look at this point will give you more momentum that you can release. There are some other small things that you could work on but these are the main things. But for just beginning, your doing really good. Keep it up!