Complex sentence: Ford's carpentry work for George Lucas eventually landed him his first starring film role, when he was hired by Lucas to read lines for actors auditioning for parts in his then-upcoming film "Star Wars" (1977).
Split into simpler sentences: Ford's carpentry work eventually landed him his first starring film role. In 1975, George Lucas hired him to read lines for actors auditioning for parts in the film "Star Wars" (1977).