Very difficult to comment on what you've done so far, I certainly wouldn't show clients anything like this at it's current stage. If it's part of the planning stage then fine, but don't plug anything that isn't remotely finished... unless that is it!??
Also, the colours are bland... is the band bland? What type of music do they play? What is the audience like? These are the very basics of things to consider. You should post again when you're nearly completion.