I've made two using the Quiltsmart interfacing... and I'm definitely a beginner quilter. The center does not bulge... I added borders and two rows of additional stars (at top and bottom) to get the size I wanted. I love the Quiltsmart stuff. I've seen a new Quiltsmart for the New York Beauty... can't wait to try it.
(I don't own stock or anything... just a satisfied customer!)
Have fun... the quilt will be beautiful no matter what method you use...