Complex sentence: After 15 months of training he began auditioning in Los Angeles and began acting professionally in 1997, his first paid role was a television commercial for Pizza Hut, featuring a dancing Elvis Presley.
Split into simpler sentences: After 15 months of training he began auditioning in Los Angeles. He began acting professionally in 1997; his first paid role was a television commercial for Pizza Hut, featuring a dancing Elvis Presley.