Curved piecing project

I have been working on a technique that I learned from Judith Dale, an artist who designs large art quilts with delicate lines and beautiful pastel colors. It requires a great deal of accuracy and as I am discovering, is more easily done by hand than machine when the curves are tight. I like the finished look but not sure about the time it takes to do! I have made the first layer and you can see the rice paper pattern beside it that I will use to guide me in adding embellishments. I am also trying a new backing for support, a firm non-woven interfacing, rather than batting. I want this piece to look flat, not quilted. I will eventually wrap it around a canvas to finish it. I'll keep you posted.