Jarvis has always dreamt of becoming a writer. his teacher at school told him that and are the essential tools for any person who wants to become a writer. she also told him that he should experiment with different literary to improve his writing.

Imagination and observation, styles.

Explanation:

There are certain qualities that an individual must possess in order to become a good and effective writer as your writing/words must influence people which is the sole aim of a writer. Jarvis aspires to be a writer, thus his teacher must have told that Imagination and observation are two pillars/tools to become a good writer must have an ability to shape the ideas into words through his/her imagination and observe the happenings of life and society to offer the issues critically with a message to the readers that would elicit their thoughts. The next advise he would've been given that he should practice different literary styles to improve his technique and presentation.