Complex sentence: At age 15 she was taking acting lessons at the famous Italia Conti School in London but then she received her big chance: director David Leland chose her for the leading role in his movie "Wish You Were Here".
Split into simpler sentences: At age 15 she was taking acting lessons at the famous Italia Conti School in London. In 1987, director David Leland chose her for the leading role in his movie "Wish You Were Here".