Well, you have a couple choices:
If you continue to let it grow, you could have an elongated chin monstrosity like System of a Down or Mudvayne, which if you are a rock star will only help your career.
You could also let it grow only a certain length and try to imitate an Egyptian king. You may need to braid your beard for this.
Or you could just shave it back down for the Mephistopheles

look. Grow it out a bit and wax it to look like "Him" on the Power Puff Girls.
- Akhmed