Experimental Drawings by Picasso

I have now been given the task to write about three different artists who use experimental drawing as inspiration, or for any other way.
Experimental drawing is when you draw or do an initial sketch to gather up your first ideas

Here are a set of experimental drawings by Picasso.
we can see clearly that Picasso has played about with different ideas but for the same subject. they are all drawn differently and with different techniques.
Picasso was one of the most prolific artists ever, so to produce so much art, experimental drawing would have been a must for his work process!