I worked hard for nearly 3 months on the L to L drill to teach my body not to come from over the top and it really worked for me

If you reason there are 2 key positions in this drill. Halfway back and halfway through. Halfway back the wrists should be fully set and the butt of the club pointing at the ball. You should be feeling the club working to the inside and the right elbow folding. The SwingSetter is a great aid for teaching this position (see Gregs other thread)

Look at Appleby in the 3rd Frame. Perfect

http://content-golf.live.advance.net...lebypanel3.jpg

A lot of people here are either too flat, too steep or too long by this point

Now from here you need to try and swing through so the club is extended down the target line halfway through and the toe of the club is pointing to the sky (shake hands with the target). If it points left you are coming OTT and will be pulling/slicing, if right you will be pushing/blocking or hooking if you have quick hands

Again look at Appleby in the 3rd frame

http://content-golf.live.advance.net...lebypanel2.jpg

Now I dont care how you 'feel' you get the club to this point since it will be different for everyone. You may turn your hips, turn your chest, push down on your left heel or swing with your upper arms, but the key thing is to make this 'throwing' movement in slow motion to feel yourself come at the ball slightly from the inside (from that halfway back position) and then extend down the target at impact so the club is pointing right down the line and your arms feel really extended. If you do this repeatedly and learn to feel this motion correctly you can then start to speed it up and then do it will a ball on a tee

IMHO if you cant hit 10 out of 10 7 irons at least 140 yards and straight with this drill then you arent going to consistently improve any time soon. You'll be amazed how far the ball will actually go with such a short swing if youre doing it right. This is the business end of the swing. Many top players will look different as they go further back in the backswing or how they follow through but nearly all look the same through impact

This one drill has helped me more than any other and its the first one I always use when I practice