Get people along to your shows with great posters and flyers for print and web. Marketing will get people through the door.
Exhibition brochures and catalogues can really help spread the word about your great work. Give something that your audience and future buyers can take home and they will be back. They will have your details and a great reminder of your art or craft work.
Proposals for commissions and competitions don't have to be text only. Let them know who you are by really get your visual point of view across.