When it comes to executing different shots, a good way to expand your imagination and understanding of shot making is to practice hitting soft pitches over a bunker with a 5-iron.  You'll soon be able to picture a variety of different shots.

When you want to hit a soft draw, making the ball fly right to left, try relaxing your shoulders and your grip.  This reduces the tension in your hands, arms, and helps promote a better turn.

When you have to hit a sharp hook around a tree or other obstructions, the key is to align your body along the line that you want to start the ball and then close the clubface so that it aims where you want the ball to end up.

When you need to hit a long, low shot, play the ball back in your stance.  This promotes the descending blow you need.  Don't forget to delay the release of your hands at impact.

For pitching and chipping out of tall grass, remember the saying, "the taller the grass, the tighter the grip."  This keeps the club moving at a constant speed through the grass.  Otherwise, the grass can close the face on the downswing.