My girlfriend only does pieced backs and I'll be the first to tell you...her backs are usually better than her fronts :). LOL! I've started piecing my backs out of jealousy. I think that if you're going to piece the back, I'd really piece it. Chop it some more and keep piecing. How you have it now is a good start or a good way to keep it too. You might have done it out of need, but it adds some fun interest in the back. (I guess I'm assuming the three pieces are all different colors...if not, you probably won't notice.) :)