Complex sentence: Ponca's approach was to ignore demands to make designs fit stereotypical definitions of indigenous identity and encourage creativity, with innovation, like utilizing mylar, a space-age material to create designs which reflected the Osage connection with the sky.
Split into simpler sentences: Ponca's approach was to ignore demands to make designs fit stereotypical definitions of indigenous identity. Instead she encouraged creativity and innovation, like utilizing mylar, a space-age material to create designs which reflected the Osage connection with the sky.