i recently made a sign that draws the people in. don't have your space over crowded and make it a point to talk to everyone. have a portfolio so people will stick around just a bit longer. have business card...i can't tell you how many cards i hand out at each show. no one leaves my table with out a card!! the more people around your table the better. people seem to flock to a crowd.
here is my spot at my last show with my new sign!!