Short story I recently posted on Smashwords. Thinking about turning it into a short novel. Feedback?

Someone suggested it be turned into a short novel, and I think it would be fun, but I am not sure if there is enough to expand it into a longer story.

It's a zombie story, but from an odd perspective. It's a little gory, but nothing you haven't seen on prime time television.

Here's the Smashwords link.

Use the coupon code HW24K for the free copy.

Thanks in advance!