How to Drill Screw into Metal Door

This is the first time, I learnt to drill screw into metal door from our city's famous blacksmith who has more than 40 years experience of making iron gates and other equipment of iron and steel. Thanks God, I had the mobile camera. I saved the practical part of this. Now, it is ready for svttuition which is a free online virtual school where you can learn anything of the world practical.