This tip is applicable to all golfers. If your body and club face are square to the target but your ball is slicing badly from left to right, check your grip pressure.
When you grip the club too tight-particularly with your right hand, it prevents a complete release of the club head through impact, which leaves the club head open. It also promotes an out and over shoulder action at the start of the down swing, which delivers an outside to inside swing path.
A lighter grip pressure will help release the club head through impact.