A part of making a selfbow is to get over the fear of breaking it. Pay attention and listen to it, yes. But, don't be afraid of the little imperfections and take the next step. After you have more bows under your belt, you will discover the differences between minor and major imperfections. In the meantime, post a pic, get some opinions and move forward.
Nevertheless, back to your picture. Forget about a backing, in this case. Make the bow.