I'm on my cell phone, so I'll make this quick but (hopefully) informative and helpful.
You're pulling with your arms instead of trusting your legs. Think about pushing through the ground and keeping your arms loose. Some clean pulls will help. Also, think about staying on your feet longer - you come up on your toes too soon. Additionally, you need to keep your back real tight before you initiate the movement - you look kind of soft because the weight is "comfortable" (inferred by the fact that you powered the clean).
Some remedial exercises would be dip cleans, hang work above and below the knee, and some block work. Get tight and stay as explosive as possible throughout the movement. Hope this helps.
Javier A. Sanjuan
Olympus Barbell Club
Dear God, please help me lift heavy and be awesome. Thanks. Amen.