The simplest way to approach a pitch shot is to treat it as a miniature version of your full swing. The distance of the shot determines how big of a swing you need—from 10 yards off the green to a nearly full shot with your wedge.
The most important factors to remember are to trust the club's loft and to commit to making a decisive swing. Many players struggle on pitches because they think they need to help the ball into the air. That causes the upper body to get tense and block a free swing. Commit to the shot and accelerate through the ball to a balanced finish.