A few vital pieces of information should be on every flyer. The name of the headlining band or event should be larger than any other font and easily readable. Extra information that must not be forgotten include the name and location of the concert venue, the time and date of the performance, the cost of the event and a website where more information can be found. Do not put much more text on any flyer, as it is easy to make it appear cluttered with too many words.
If you are promoting a new band, the text may not be as important to your flyer as an eye-catching image would be. Original art may be compelling, but recycling familiar images is a smart idea if you're trying to appeal to a specific scene. For example, high contrast black and white images appeal to punk and hardcore fans, and multi-colored neon images are popular in eccentric indie scenes. You could also use a photo of your own band, either a live shot or photo shoot image.
As important as the flyer itself is, just as vital is where you choose to post that flyer. Bars, cafes and shops in your neighborhood may post event flyers in particular areas or on bulletin boards. Before posting your flyer in places of business, always ask an employee first to get approval. If your show is of similar interest to the fans of another concert, physically hand out small copies of the flyer to concert-goers as they leave the show.
Photoshop is a valuable tool for a band. If a member of the band does not own it, you can hire graphic designers to create promotional flyers with digital files from the band. Using computer software to create your flyer makes it easier to adjust the sizes to print. It is easy for someone to tell how much work went into the design of a flyer, so don't disregard its value even if it is only promoting one concert.