Invitations
Invitations to private views, talks etc are a good way to attract new audiences. Current audiences have the opportunity to show these to other people, to bring them along and introducing their friends to you and your work.
The imagery you use on one side of an invite is the primary way in which new audiences will make snap decisions about whether they will come and see your work. Text on the reverse provides you with a second opportunity to set expectations about the event; date, location and time being obvious, but also other background information. Details of any sponsors and any comments about the work can also be included. Think of the way in which a book jacket is used to promote the contents. Reference your website if you have one.
You may be interested in the listings of printers on this website.