Complex sentence: After graduation, Woo started working as a copywriter in advertising before moving on to print journalism, where, at one point, she served as an assistant editor at "TODAY", a free English-language tabloid in Singapore.
Split into simpler sentences: After graduation, Woo started working as a copywriter in advertising. She crossed over to print journalism thereafter and served as an assistant editor at "TODAY", a free English-language tabloid in Singapore.