Barbossa has a simple shorter beard compared to the others. in some of the later Pirates of The Caribbean movies, he looks much older and tired looking, this could be something I consider in my character look. Adding and old age makeup to finish my look.
Pirates of the Caribbean: The Curse of the Black Pearl
Pirates of the Caribbean cast. From left: Captain Hector Barbossa (Geoffrey Rush), Captain Jack Sparrow (Johnny Depp), Will Turner (Orlando Bloom), producer Jerry Bruckheimer, Elizabeth Swann (Keira Knightley), and James Norrington (Jack Davenport).