Okay so something that might help is joining groups.
Like this one:
anything-traditional. Just as an example.
You can share your art on them so people who are also in the group get a notification.
Also uploading art frequently keeps your watchers interested.
What might also help is wandering around DA and comment on other art you like, so you might get the artists attention. That's also a great way to find someone to chat about interests and help each other.
I think with this methods and your amazing work you'll get a lot of watchers in no time!