Even if you don't like a project, and even if you think that it doesn't work, keep going. Persevere. You never know what good will come from it, and you never know who will see it and want to hire you from it. Trust your client; most of the time there is a method to their madness. I cannot yet tell you why I am saying this, but I can tell you that I did persevere, and something great has come of it. I'll keep you posted.