Arm your hand with a pencil, a charcoal, a brush dipped in ink, etc..
Draw it to a virgin piece of paper.
Relax. Have no fear. Just observe.
Maybe your hand doesn't want to move and stays still, as if dead, without knowing how and where to begin...
But it is also possible that it decides to mark the page immediately, even if only a little at first, before it gains strength and speed... And it is also possible that it dances frenetically from the beginning... It could decide to stain or destroy a former inscription... To observe... is all that is allowed.
It is forbidden to participate by marking the page in a reflexive manner. It is forbidden to interfere during the process, only observation is authorized. The rule is to disappear, to try not to act. At least if you want to experiment that method in a complete manner.
It is very pleasant – well, sometimes – to feel your hand has a life of its own, a particular energy, a rhythm, surprising ideas, to discover it knows much more than believed. It is not about making a reproduction nor an illustration, only about opening new creative perspectives.
There is a time when it is convenient to recognize, as if by magic, that the composition is finished. It is achieved. And nothing can be added or removed.
There is no rule, and a simple stain can be enough.