Here is the image of the original idea of She-Ra.
James Eatock from his fabulous He-Man and She-Ra blog writes:
Before the character of She-Ra had been finalized work was already underway on the series. However when it came to storyboarding the first She-Ra episode,"Into Etheria" artist Don Manuel had no character designs to refer to and subsequently had to design many of the characters himself. Even though he only designed She-Ra for this one particular storyboard image his take on the Princess of Power was truly unique, creating a scantily clad brunette!Interesting, she looks like a warrior queen from a Heavy Metal comic strip.