if you want guidelines umm i imagine her as a young girl with long hair quite curvey and also i would imagine cutscenes like they would be in persona 3/4 with 3-4 full size drawings in cutscenes and little chibi forms outside cutscenes (to make it easier to do) ooh a better example is eic battle fantasy 3 though
Maybe draw the MC in 3-4 different poses
one embarrassed(naked or not is your choice)
one happy
one sad
one angry
one shocked
please
but you don't have to