This thesis project explores Chicana feminist Gloria Anzaldúa's notion of a new mestiza consciousness, in which the marginalized ethnic American woman transcends her Otherness, breaks down the borders between her different identities, and creates a Thirdspace. Through the rehearsal and performance process, three ethnic American women employed Robert Scholes' model of textuality-the consumption and production of texts-as a framework to construct a new mestiza consciousness, and create a Thirdspace. The project set to determine what strategies were significant rehearsal techniques for encouraging the cast members to exercise textual power and claim a new mestiza identity, a Thirdspace. The results reveal four overarching factors involved in assuming textual power through rehearsal and performance in the production-building trust, having appropriate skills, assuming ownership and responsibility, and overcoming performance anxiety. The discussion addresses the direct link between Thirdspace and Scholes' notion of production of original texts.