Complex sentence: After finishing high school she moved to Harlem, New York where she worked in the Garment District as an Assistant Designer for three years before moving to the West Village, where she started her own fashion line'Avant Vamp' in 2014.
Split into simpler sentences: After finishing high school she moved to Harlem, New York where she worked in the Garment District as an Assistant Designer for three years. After that, she moved to the West Village, where she started her own fashion line'Avant Vamp' in 2014.