If I keep accepting roles as an extra, will I always be seen as a face in the crowd?

[Shax]

I'm currently registered with an agency that regularly gives me work as a walk-on or background artiste (an extra).

I have been with this agency for over a year and have been nothing more than a face in the crowd or the random person that walks past in the background of a shot.

I'm still young and I'm looking for more acting experience in the Film and TV industry other than just being an extra. What would you reccomend I do in order to get cast for more important roles that include dialogue and actions?!