To narrow a topic that is too broad, try to pick one sub-topic of the topic to focus on. If you are having trouble thinking of a sub-topic, try asking yourself questions about your topic. The answers to those questions can reveal sub-topics that might offer a possible route to narrow your topic.
Answer: well, if your topic is about sports, then narrow it down to just one sport, or even a specific person playing that sport. Think of things inside your topic, smaller things that would be easier to write about
He starts off by eating little things like flies, but then he goes onto eating bigger things and those things can symbolize growth in a person for vampirism.
