Place an empty sleeve box between a teed golf ball and the target as indicated. The box should be approximately a grip length ahead of the ball. On a windy day it might be necessary to use tees to anchor the box in place. This is a costly addition to this drill!
If you can hit shots without running the clubhead into the box then chances are that you’re no longer hitting down on the ball and you should see an increase in both distance and the altitude of your tee shots. Keep in mind that as you “upgrade” your attack angle, should you have an adjustable driver, you might need to alter the loft.