not only...but also.

Not only do advertisements direct people in choosing goods, but also well-made adverisements are a kind of art works that most people enjoy.

因为广告与好的广告不是同一事物。所以如此。

广告不但可以指引人们选择，而且好的广告还有视觉享受.
Excellent advertisements not only direct our choices, but also provide us visual pleasure.

not only ... but also...一般说的是同一个主语，你这advertisements 和good advertisements 是两个主语，因此最好不要用这个句型

adviertisement not only direct people to choos goods but also a kind of art works that most people enjoy.

Not only do advertisements direct people to choose goods ,but well-made advertisements are also a kind of art work that most people enjoy.