Hi Jeff
Usually, a skulled shot is caused by the leading edge vs. the club face making contact with the ball. This is usually when the club head has passed the handle before impact… also known as a flip. If you can focus on keeping the front wrist flat or even bowed out a bit, with the back wrist bent in a bit holding this shape, through impact, it will help keep the leading edge in check. This can also be caused by the back hand trying to help by throwing the club head. You also may be playing the ball too far forward, but generally that is not the case. Make sure your body rotation is accelerating through impact, to the finish and not stopping for you to hit at the ball. This helps keep the hands in check.