I have a number directories under /opt on computer jack. I want some (not all) of them to appear in /opt on computer jill.

I have the /opt directory on jack mounted on jill under /mnt/jack

If I go into the /opt directory on jill and do this:

ln -s /mnt/jack/opt/files .

I get /opt/files/files on jill. What I want is /opt/files and I can't see what I'm doing wrong.