Complex sentence: David "C-Diddy" Jung won the competition, becoming the first ever US Air Guitar Champion and earning a spot in the World Air Guitar Championships, where he also became the first American to win the title of World Air Guitar Champion.
Split into simpler sentences: David "C-Diddy" Jung won the competition, becoming the first ever US Air Guitar Champion and earning a spot in the World Air Guitar Championships. At the World Championships, C-Diddy emerged victorious, becoming the first American to win the title of World Air Guitar Champion.