create virtual directory on Amazon Instance

create virtual directory on Amazon Instance

Alright, So I have an AMI that I use for a beanstalk app. I started with
the generic amazon instance it gives you, and then mounted an EBS volume
on it. I then uploaded my webapp. What I wanted to do next was have some
kind of virtual directory on the site /files that is accessible via the
web and points to the mount location /mnt/Files . I tried
sudo ln -s /mnt/Files /home/webapp/files
But that didn't work. I don't have access to webapp folder, so I can't
really dig around.
So my question here is two fold.
1) Is there a way to configure a virtual directory like that without
modifying the vm itself.
2) If there isn't a way to do it that way, how would I go about making a
virtual directory? I'm not even certain that webapp contains the server
files etc.