She attended art school, but was told by one of her instructors that she was not good at illustration, that she should go into advertising instead.

她上的是艺术学校，但她的一个导师告诉她，她不擅长插画，她应该去做广告。

youdao

Many of us came to the profession out of other portals not specifically tied to advertising, such as Creative Writing, Media Studies or the Art school.

FORBES: Less Fartsy, More Artsy: The Evolution of Advertising Into an Art Form