Naming my short story

One subject I am doing at uni—a fiction writing subject—requires that we write a short story (3000 words) and submit it to our peers for critique. It's great to get feed back on your work, in this case a story that I had lost faith in. A story that everyone else liked. It's still in the drafting process but I'm looking for a name. It's a story about change, inspired by Kafka's 'Metamorphosis'. But instead of changing into a giant bug, my character changes into a vampire. It seems that in writing most of my stories lately I am having difficulty with coming up with a title. I would love to find an exercise or tool that helps me with this.