Have someone holding the crown of their head would make it easier.
But if you are alone, then using both hands on each side of the face simultaneously will do the trick.
You stabilize the causalty's head with your forearms.
By placing a forearm on each side of the casualty's head.
Use the forearms
Use the forearms
By placing a forearm on each side of the casualty's head.
By placing a forearm on each side of the casualty's head.
By placing a forearm on each side of the casualty's head.
By placing a forearm on each side of the casualty's head.
by placing forearms on each side of casualty's head
by placing a forearm on each side of the casualty's head
By placing a forearm on each side of the casualty's head.
by placing forearms on each side of casualty's head