Complex sentence: Young is a painter whose art has been displayed in galleries throughout the world and can be bought from his website; he is also a published author whose works include two filmed screenplays and 400-page historically based novel called "Endings".
Split into simpler sentences: Young is a painter whose art has been displayed in galleries throughout the world and can be bought from his website. He is also a published author whose works include two filmed screenplays and 400-page historically-based novel called "Endings".