Photo from 'A Life of Picasso The Minotaur Years, 1933-1943' by John Richardson
I was so surprised to see that these portraits of a woman's head (I forget which one it was, maybe Dora Maar) were both painted in 1939. Look how different they are! One is a somewhat realistic depiction of a woman with a cute green hat. We would know who it is if it were a friend. The other one however is a strange contortion of a head and body, sort of surrealist, and only the people on the inside know who it is intended to be.
Many times I am chastising myself because I keep changing my 'style', if you can call it that. I go back and forth from a more realistic depiction of a landscape to a minimalist abstraction with only a few clues as to what it is. For instance, here is a lake that I painted inn 1999: