For example, one of the five versions of the Madonna by Edvard Munch has underdrawings showing the arms conventionally hanging down, before the final version has one arm behind the subject's head, and the other behind her back.
The different versions of the Madonna by Edvard Munch illustrate how the artist experimented with various arrangements, including underdrawings that showed the arms in a conventional position, hanging down, before settling on the final version, which placed one arm behind the subject's head and the other behind her back.