Watch the video on Iron Direction
One main factor to improve Direction

Make sure that you can hit your irons more or less the same distance every time. You only have a challenge with direction, otherwise start with Distance Control.
Check out what Padraig Harrington says on his YouTube channel about:
Wrists in the Golf Swing Part 1
Check out what Padraig Harrington says on his YouTube channel about:
Hitting Draws and Fades
START YOUR TRAINING!
Iron – Direction: 10 Training Sessions
These 10 Training Sessions can be spread out over 4-8 weeks, depending on how often you train.

