For your swings:
Try using a towel to swing the kettlebell. If the towel curves during the movement, or your wrists come up before the bell, you're muscling the bell up. You don't want that. Swings are meant to be a lower body movement, with no real upper body help. Using the towel makes it harder to muscle the bell to the height you want without being noticed. It's a hip movement. Your hands should only be holding on, your arms should be almost limp.
For your cleans:
Control the bell. You're not making a straight line (front view, would need to be arced in a side view). In the video the bell goes up, to the left, to the right, then you straighten it. That's way too much movement. You want a single fluid, smooth movement from floor to rack position. It seems like you are trying to move more like a high pull, making a straight line from floor to rack. You should be arcing slightly.
Cleans are a hip movement. It looks like you're using your back and arm to pull it from the ground, but I've always been taught that the clean is almost identical to the swing. The biggest difference is where the bell goes, and that is controlled by a rotation of your wrist.
Consider getting a $20 kettlebell from Walmart to really fine tune your technique. Heavier bell has a steeper learning curve.
Steve Cotter, Steve Maxwell, Mike Mahler, and Pavel are all worth googling/youtubing to see great techniques, dvds, and free articles.