I can't really stress enough the importance of a good coach. Check out Gary Valentine of Team CT, and see if he is close enough to you that you can train with him. It will really accelerate your Olympic lifts. You haven't been lifting long so obviously there is a LOT wrong with them, but I'll try to touch on the major points.
1. Use a static start (still tight position) not a dynamic start (Pumping the hips, up and down, etc...)
2. Lead with the shoulders more as you pull.
3. DO NOT stop the bar. You can see you get the bar mid thigh than you kind of stop the bar to try to crank it up over head.
4. As you stand up focus on keeping the knees out and pushing them "back" as you extend the knee. As you pass the knee squeeze the lats and sweep the bar into towards you and then drive the hips upward.
1. Same thing regarding the start position in the snatch.
2. Also chest up more in the pull.
3. Don't wait so long before the jerk
4. Stay on the heels more in the dip, and drive the knees out, not forward.
5. Your back foot should be on the ball of your foot with your toes pointing in towards your lead foot, if not at least straight ahead, but definitely not turned out to the side. That usually means that the width between your front and back foot is too narrow. The split isn't like a scissor, the feet should also move out to the side slightly.