Complex sentence: Since his debut in 2007, he has appeared in a great number of films.He has done many things throughout his career, including Transsexual films, BDSM and now Directing.
Split into simpler sentences: Since his debut in 2007, he has appeared in a great number of films. Mathews has done many things throughout his career, including Transsexual films, BDSM and now Directing.