Update on Zentangle quilt

I began the project with enthusiasm, however, I'm sad to report that it is not working out. The quilt is bunching up under the heaviness of the stitching done to gain the black areas. I've done everything I can think of to fix the problem, but nothing's working. I think I will abandon this project for now. Perhaps it was because I didn't start in the middle of the quilt or what, I don't know. Its just not worth completing at this point. Perhaps I'll try a smaller project at another time. I tried.