Lefties only golf tip: So go on the Internet and it's a wash with ideas of how to control the length of your pitches. Obviously you'll see a lot about the clock face swinging to different points on the clock face. You might want to go to eight o'clock, nine o'clock, ten o'clock you may want to use body parts as a reference.
Left Handed Golf Tips: Pitching Distance Lesson by PGA Teaching Pro Adrian Fryer