Once your spots have been selected you need to promote as much as possible. The film festival crowd is a little more jaded to conventional forms of press notification and advertising so you are going to have to be creative and use principles of guerilla marketing. Post interesting posters around town and specified venues. Hand out flyers to potential audience members, and try and seek out celebrity filmmakers and critics to support you. You are also going to need to have press kits available with a synopsis, mission statement or treatment, production stills, and any other piece of information about the project, the cast, and the crew. Try to send these out to any press outlet that will have them, as well as anything else around the film festival.