May be the following is what you are looking for.
First of all, grab the striker with your dominant hand, with its edge facing up and spine facing down.
Brace your hand on the ground closer to the tinder.
You will be keeping the hand with the striker stationary during the striking. Grip the ferro rod with your secondary hand.
Bring it under the striker, tilting it to about 45 degrees relative to the blade.
Lastly, pull the ferro rod toward you, making sure that it rubs against the striker’s edge.
This will generate the hot sparks.