Most of the time I see amateurs walk into the ball incorrectly and set their body to the target instead of their clubface. This skews their alignment and now they have to begin to make compensations to get the ball started on their intended line.
I would have golfers practice picking an intermediate target on the practice area and get comfortable lining up the club face properly. As the golfers rehearse this, first they need to align the club face then set their feet/body. This will ensure that the clubface is at the target.