When people read fiction, they want to know that happens next to the characters. In this case, it is necessary to remark that you should remember to create tension through different ways, such as syntax, imagery, or rhetorical devices. Another thing is to develop reliable and real-ish characters, since it is necessary that readers can identify some aspects of a real person there. Also, perhaps the most important thing, it is necessary to organize well the ideas so you don't contradict yourself.
