Start by creating an overall layout and design. Some concert posters have a picture of the performers in action or relaxing. Photos draw people in and help create a connection between fans and musicians.
Some bands choose to use a photograph or graphic design that sets the mood of the band but doesn't show the members. A strong image can make your concert poster visually appealing, therefore grabbing more attention.
Deciding where to place the performer's name and how it should look is vital to a successful concert poster. Use the group's logo or font for consistency across all advertising. Make sure the name is prominent, but remember that big doesn't necessarily mean eye-catching. Surrounding the name with white space or putting it in an empty part of a photograph can draw attention to it.
Putting the name of the band on the top or bottom poster, along with the other show information is a good bet. That makes it easier for people to see all the pertinent information at a glance.
Place copies of your poster where they will be seen. Look for spots that are in high-traffic areas that people who would be interested in the concert would go. Be sure you know the laws about placing advertising before you go out, though, so that the authorities don't take your posters down before anyone sees them.